electric charges and fields class 12 mcq

(b) Weber (b) smaller (a) 8 electrons can be added (a) 2 : 5 3. If you choose right option, there will be shown green colour on the option otherwise red for wrong option. Explanation: If the charge of 1 C is placed at a distance of 1 m from another charge of the same magnitude in a vacuum, it experiences an electrical force repulsion of magnitude, 6. If a charge is moved against the coulomb force of an electric field, then (a) work is done by the electric field(b) energy is used from some outside source(c) the strength of the field is decreased(d) the energy of the system is decreased, Question. Class 12 Physics Chapter 1 MCQ | Electric Charges And Fields Important mcq#SatyaClasses #Biology #Question #Class12 #CBSE #ICSE #NCERT #KVS #BoardExam2021Wel. Assertion (A) Coulombs force is the dominating force in the universe, Reason (R) Coulombs force is weaker then the gravitational, 6. These Class 12 Multiple-choice Questions of Physics Electric Charges and Fields with answers for a quick revision of the Chapter thereby helping you to enhance subject knowledge. When a dielectric medium is placed in a uniform electric field, the dielectric constant of the medium is the ratio of the .. of the medium to the of free space. When a comb is rubbed with hair, it attracts paper bits. The number of electric lines of force that radiate outward from 1C charge is . (b) coulomb If you have any query regarding CBSE Class 12 Physics Electric Charges and Fields MCQs Pdf, drop a comment below and we will get back to you at the earliest. The electric lines of force are radial and inwards. The force per unit charge is known as ____________. Question 3. Calculate the charge on the dipole if the dipole length is 2 cm. All the observable charges have to be integral multiple of e. Thus, if a body contains n electrons and m protons. Three charges + 3q + q and Q are placed on a st. line with equal separation. Calculate the electric flux through each other face of the cube. (b) gives electrons to silk. Number of lines entering the surface = number of lines leaving the surface. Students have to pick the correct option and check the answer provided here. MCQ Questions for Class 12 Physics are very important for the latest CBSE Term 1 and Term 2 pattern. increase velocity will differ. If a third charge q3 be placed quite close to the charge q2 then the force that charge q1 exerts on the charge q2 will be, 44. If two charged particles of same mass and charge are projected in a uniform electric field with the same speed, then, 41. Notes and Important Links of this lecture Discord Server: https://discord.com/invite/amandhattarwalInstagram:https://www.instagram.com/apnikaksha/Telegram . (b) 8 electrons can be removed (b) electric field The electric field at the point (1, 0, 2) in volt/meter is (a) 8 along positive X-axis(b) 16 along negative X-axis(c) 16 along positive X-axis(d) 8 along negative X-axis, Question. A charge contained in a sphere of radius a centred at the origin of the field, will be given by (a) A e0a2(b) 4 pe0Aa3(c) e0Aa3(d) 4 pe0Aa2, Question. (b) charging by physical contact The vertices A andB of an equilateral triangle of a side a have same charge. 29. Electric charge is a basic property of matter carried by elementary particles which get affected by electric field and magnetic field. It does not depend upon the shape or size of the surface. (a) 7.7 1013Nm(b) 3.855 1013Nm(c) 3.855 1015Nm(d) 7.7 1015Nm, Question. PhysicsMCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. A system of closely spaced electric charge forms a continuous charge distribution. (c) No. From a point charge, there is a fixed point A. 5. (c) Zero The electric field at a point 5 cm from a long line charge of density 2.5 x 10-6 cm-1 is, 35. An 8,000 lbs pneumatic tire warehouse forklift costs $182 a day, $442 a . If the dipole of moment 2.57 1017cm is placed into an electric field of magnitude 3.0 104N/C such that the fieldslines are aligned at 30 with the line joining P to the dipole, what torque acts on the dipole? Which of the following is incorrect, 40. (a) greater (a) induction only A Faraday cage or Faraday Shield is an enclosure made of a conducting material. We hope that the above mentioned latest MCQs for Term 1 of Chapter 1 Electric Charges And Fields will surely help you in your exam. The electric field in a certain region is acting radially outward and is given by E = Aa. 1. The food we consume has water molecules which are permanent electric dipoles. (b) four times Two charges are at a distance d apart. (b) 1 N Electric Charges and Fields Class 12 Physics MCQs Pdf 1. (d) same. (c) Gausss law is not much useful in calculating electrostatic field when the system has some symmetry. We hope you liked the above MCQ Questions for Class 12 Electric Charges and Fields with Answers. (c) PE cos Question 2. Vasquez had sped through a parade route forcing people watching the . When we rub a glass rod with silk cloth, electrons from the glass rod and transferred to the silk cloth. (c) N C-2 m2 Because the whole charge is associated with an electron. Gravitational force is the dominating force in the nature and not coulombs force. 7 x I0- 9 N, when they are separated by a distance of 5 A. An electric dipole of moment p is placed in the position of stable equilibrium in a uniform electric field $\vec{E}$. Protons and electrons are the only basic charges in the universe. (c) nature of charge According to this theorem, the electric flux linked to a closed surface is equal to 1/?o times the charge enclosed by the surface. If electric flux through a closed surface is zero. 4. How much electrons are missing from each ion? A charge is placed at the edge of a cube of side length a. 14. 20. (c) no charge exists inside the surface. The quantisation of charge indicates that, Answer: (a) Charge, which is a fraction of charge on an electron, is not possible. It's a law of physics. Choose the right explanation. (a) gains electrons from silk. (d) electric current, 6. i) Which of the following material can be made Faraday cage, ii) Example of real world Faraday cage is, iii) What is the electrical force inside a Faraday cage when it is struck by lightning, iv) An isolated point charge + q is placed inside a Faraday cage. (c) charging by friction Question 1. The safety bulb should have high resistance and low melting point. To find the field of a continuous charge distribution, we divide the charge into infinitesimal charge elements. Electric flux per unit solid angle is defined as. Welcome to your Electric Charges and Fields MCQs Mock Test of Class 12th Physics 1. E 0 but V = 0 because E is not cancelled out by each other but V is cancelled out by each other. i) How many electrons must be added to an isolated spherical conductor of radius 20 cm to produce an electric field 1000 N/C just outside the surface? 1. They can not form closed loops. Electric Charges and Fields Class 12 Physics MCQs. Question. Dionicio Vasquez was stopped by officers outside of a parade route barricade on November 26 where it was discovered that he had open containers of alcohol in his car. 3. Class 12 Physics Chapter 1 : Electric charges and fields MCQ on electric field 1. A point charge + q is placed at a distance d from an isolated conducting plane. What is the force acting on each charge, if the distance between them is doubled and charges are halved? Gauss theorem is mainly used to find out the electric flux linked to a closed surface. The flux through each face will be Q / 24?o. If you have any other queries of CBSE Class 12 Physics Electric Charges and Fields MCQs Multiple Choice Questions with Answers, feel free to reach us so that we can revert back to us at the earliest possible. Answer: C. 2. (c) the dominant electric field is inversely pro-portional to r3, for large r (distance from ori-gin). The net electric force on the dipole. The colder it gets outside the more energy it takes to keep your house warm. (c) changes erratically At A, there is an electric field of 500 V/m and potential difference of 3000V. MCQ Questions for Class 12 Physics Chapter 1 Question No 16: An infinite no. They will. Gausss law is useful for an easier calculations of electrostatic field when the system has some symmetry. A hemisphere is uniformely charged positively. As soon as it is left free it will move perpendicular to the direction of the electric field. 11. a torque as well as & translational force. A charge Q is placed at the centre of the line joining two point charges +q and +q as shown in the figure. (c) double Coulombs attraction exist even when one body is charged and the other is uncharged. Assertion (A) Consider two identical charges placed distance 2d apart, along the x-axis. (a) increases (b) direction Hope the information shed above regarding NCERT MCQ Questions for Class 12 Physics Chapter 1 Electric Charges and Fields with Answers Pdf free download has been useful to an extent. It allows students to test their knowledge and answering skills in the given time frame. electron can be added or removed Question. Question 13. One quantum of charge should at least be equal to the charge in coulomb : 1.8 x 10 -19 C 1.9 x 10 -19 C 1.6 x 10 -19 C 1.7 x 10 -19 C See Answer 3. a translational force only in the direction of the field, a translational force only in a direction normal to direction of the field. Answer/Explanation. Question 1. 5 days a week Sun night - Thursday night. Due to this torque on each water molecule, molecules rotate very fast and produce thermal energy. (c) 3 = 7 This is the principle of superposition of charges. Q.1. If the nature of both the charges is same, then the potential will decrease, if the nature of the both the charges are different, then the potential increase. How many electrons should be transferred from X to Y so that they acquire equal charges? Question and Answer forum for K12 Students. Here are a few examples of warehouse forklift rental costs. The surface considered for Gausss law is called Gaussian surface. (c) C2N-1 m-2 Since electrons have a mass of (9.1 x 10-31kg). If you have any doubts or queries regarding the Electric Charges And Fields Multiple Choice Questions with Answers of CBSE Class 12 Physics, feel free to reach us and we will get back to you as early as possible. Electric field at a point between the sheets is, 28. (a) q.E and max. Class 12 Physics Chapter 1 Electric Charges and Fields MCQs are provided here with answers. Electric Charges and Fields Notes Class 12 Physics Chapter 1. Below are some of the very important NCERT Electric Charges And Field MCQ Class 12 Physics Chapter 1 with answers. Class 12 Physics Chapter 1 Electric Charges And Fields MCQs Each MCQ will have four options here, out of which only one is correct. (a) E1 > E2 A 5,000 lbs cushion tire warehouse forklift costs $150 a day, $393 a week, and $1,007 a month to rent. Electric field will increase a positive charge is brought in an electric field. Explanation: If the sizes of charged bodies are very small compared to the distances between them, we treat them as point charges. (a) 4 The number of excess electrons that the object has is 510 10 51014 1.610 12 1.610 10 2. Click Below To Learn Chemistry Term-1 Syllabus Chapters MCQs, 26. (d) C2N-1 m-2. (b) the electric field is due to the dipole moment of the charge distribution only. A positive point charge is moved near the ball. (b) equally Required fields are marked *, $\begin{array}{l}9*10^{-9} N\end{array} $, $\begin{array}{l}9*10^{9} N\end{array} $, $\begin{array}{l}10*10^{9} N\end{array} $, $\begin{array}{l}10*10^{-9} N\end{array} $, $\begin{array}{l}F = \frac{1}{4\pi \epsilon_o} \frac{q_1q_2}{r^2}\end{array} $, $\begin{array}{l}= (9 \times 10^9 Nm^2C^{-2}) \frac{(1C)(1C)}{(1m)^2}\end{array} $, $\begin{array}{l}= 9 \times 10^9 \, N\end{array} $, $\begin{array}{l}F=\frac{k.(q_{1}*q_{2})}{r^{2}}\end{array} $. (d) Remains unchanged. Download Chapter 1 Electric Charges and Fields MCQs PDF by clicking on the button below. Energy is also conserved, if we take in account of the loss of energy by heat, sparkling etc. Distance between point charge and A will be (a) 6 m(b) 12 m(c) 16 m(d) 24 m, Question. The surface considered for Gausss law is called. By practicing theseMCQ Questions for Class 12Physics you will be able to revise the entire course and also test your understanding, Question. The dielectric constant of metal is infinite, as the net electric field inside the metal is zero. If a positive charge is shifted from a low potential region to high potential region, the electric potential energy, 23. (a) 3 newton per coulomb(b) 4 netwon per coulomb(c) 5 newton per coulomb(d) None of these. Below are some of the very important NCERT Electric Charges And Field MCQ Class 12 Physics Chapter 1 with answers. In the winter season, a mild spark is often seen when a man touches somebodys elses skin. (b) 1 : 1 An electric dipole of dipole moment p is aligned parallel to a uniform electric field E. The energy required to rotate the dipole by 90 is (a)E2(b)2E(c)E(d) infinity, Question. The force acting between them will be, 39. Question 1: What is the flux through a cube of side a if a poin charge of q is at one of its corner? Select the correct alternative/alternatives: Electric field lines provide information about A charge Q is enclosed by a Gaussian spherical surface of radius R. If the radius is doubled, then the outward electric flux will (a) increase four times(b) be reduced to half(c) remain the same(d) be doubled, Question. See Answer 4. The electrostatic force of repulsion between two positively charged ions carrying equal charge is 3. (a) (b) (c) (d) Answer Question 2: Electric field at centre O of semicircle of radius a having linear charge density given as RD Sharma Class 11 Solutions Free PDF Download, NCERT Solutions for Class 12 Computer Science (Python), NCERT Solutions for Class 12 Computer Science (C++), NCERT Solutions for Class 12 Business Studies, NCERT Solutions for Class 12 Micro Economics, NCERT Solutions for Class 12 Macro Economics, NCERT Solutions for Class 12 Entrepreneurship, NCERT Solutions for Class 12 Political Science, NCERT Solutions for Class 11 Computer Science (Python), NCERT Solutions for Class 11 Business Studies, NCERT Solutions for Class 11 Entrepreneurship, NCERT Solutions for Class 11 Political Science, NCERT Solutions for Class 11 Indian Economic Development, NCERT Solutions for Class 10 Social Science, NCERT Solutions For Class 10 Hindi Sanchayan, NCERT Solutions For Class 10 Hindi Sparsh, NCERT Solutions For Class 10 Hindi Kshitiz, NCERT Solutions For Class 10 Hindi Kritika, NCERT Solutions for Class 10 Foundation of Information Technology, NCERT Solutions for Class 9 Social Science, NCERT Solutions for Class 9 Foundation of IT, PS Verma and VK Agarwal Biology Class 9 Solutions, PhysicsMCQs for Class 12 Chapter Wise with Answers, NCERT Solutions for Class 10 ScienceChapter 1, NCERT Solutions for Class 10 ScienceChapter 2, Periodic Classification of Elements Class 10, NCERT Solutions for Class 10 ScienceChapter 7, NCERT Solutions for Class 10 ScienceChapter 8, NCERT Solutions for Class 10 ScienceChapter 9, NCERT Solutions for Class 10 ScienceChapter 10, NCERT Solutions for Class 10 ScienceChapter 11, NCERT Solutions for Class 10 ScienceChapter 12, NCERT Solutions for Class 10 ScienceChapter 13, NCERT Solutions for Class 10 ScienceChapter 14, NCERT Solutions for Class 10 ScienceChapter 15, NCERT Solutions for Class 10 ScienceChapter 16, CBSE Previous Year Question Papers Class 12, CBSE Previous Year Question Papers Class 10. 12. Two point charges each of 20 C are placed 50 cm apart in air. 1)class 12 physics important MCQ (2)important MCQ class 12 physics(3)Important MCQs Physics class 12(4)CBSE class 12 physics important multiple choice questi. A 5,000 lbs electric cushion tire warehouse forklift costs $182 a day, $468 a week, and $1,248 a month to rent. An electric dipole is placed at an angle of 30 with an electric field of intensity 2 105 NC1, It experiences a torque of 4 Nm. (a) Coulomb (b) Newton (c) Volt (d) N/C Answer Question 2. 10. Practice MCQ Question for Class 12 Physics chapter-wise . Explanation: The force per unit charge is known as the electric field. Electric Charges and Fields Class 12 MCQs Questions with Answers Solve this Electric Charges and Fields Multiple Choice Questions of Class 12 Physics Chapter 1 MCQ, so as not to miss out on any concept from being clear about what they mean! If the charge of 1 C is placed at a distance of 1 m from another charge of the same magnitude in a vacuum, it experiences an electrical force repulsion of magnitude ____________. Question 7. Each MCQ will have four options here, out of which only one is correct. Explanation: The property which differentiates two kinds of charges is called polarity of charge. A man has been charged with multiple different charges after speeding through a Spanish Fork Christmas parade. The figure here shows electric field lines. When a comb is rubbed with the hair, it induces negative charge due to friction. The electric flux f through the bowl is (a) 2RE(b) 4R2E(c) 2R2E(d)R2E, Question. 6. The number of electrons present in 1C of charge is _____, 45. Question 12. These questions are designed as per the latest CBSE syllabus and NCERT curriculum. It is a weak force. Your Mobile number and Email id will not be published. Question 4. Practice MCQ Questions for Class 12 Physics with Answers on a daily basis and score well in exams. Question 8. Thus, the charge on a body is always an integral multiple of e and can be increased or decreased in terms of e. Force on any charge due to a number of other charges is the vector sum of all the forces on that charge due to the other charges, taken one at a time the individual force is unaffected due to the presence of other charges. Let the charges be separated by a distance d, Maximum force will be got after differentiating the force equation. (d) PE sin . Assertion (A) A point charge is brought in an electric field at a nearby point will increase or decrease depending on the nature of charge, Reason (R) The electric field is independent of the nature of charge, 10. Question 15. Question. An electric dipole is placed in an electric field generated by a point charge. Assertion (A) On going away from a point charge or a small electric dipole, electric field decreases at the same rate in both the cases, Reason (R) Electric field is inversely proportional to cube of distance from the charge of an electric dipole, 11. (c) in proportional to their capacity Nursing, Choosing A Career Essay | Essay on Choosing A Career for Students and Children in English, Vocational Education Essay | Essay on Vocational Education for Students and Children in English, 10 Lines on Healthy Food for Students and Children in English, Motivational Quotes for Medical Students | Inspirational Quotes for Med School, Nursing School or PT School Students, MEC Courses List | Check Mathematics, Economics, and Commerce Subjects, Top Institutes, Jobs, Scope for Arts & Commerce Students, Courses after BA | After BA What I Can do? These Faraday cage act as a big hollow conductor; you can put things in it to shield them from electric fields. iii) An electric dipole of moment p in placed in a uniform electric field E . There is an electric field E in X-direction. Similar Class 12 Doubts. Recommended MCQs - 80 Questions Electric Charges and Fields Physics Practice questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, NCERT Exemplar Questions and PDF Questions with answers, solutions, explanations, NCERT reference and difficulty level These charges are allowed to touch each other and are then again placed at their initial position. In order to maket the net force on q to be zero, the value of Q will be : An attractive force of 9N acts between +5C and -5C at some distance. 7. F is the force between two charges. Question 4. 2. (a) 0(b) 90(c) 180(d) None of these, Question. 24. You should solve these questions and compare your answers with the solutions provided below by our teachers. The electric field lines diverge from: Positive charge Negative charge Dipole Zero potential point See Answer 2. MCQ Questions Answers for Chapter 1 Electric Charges and Fields Class 12 Physics. (d) E2 = E1/r, Question 11. Electric Charges and Fields Class 12 MCQs Questions with Answers Question 1. So, a slight weight may increase or decrease slightly. What happens when a glass rod is rubbed with silk? As the leaves turn, fall weather arrives in the Mountain West. Static electricity is produced by Its surface must have charge equal to. (a) F/4 (b) 4 F (c) F/16 (d) F/8. Consider a region inside which, there are various types of charges but the total charge is zero. (b) decreases Solving the Electric Charges and Fields Multiple Choice Questions of Class 12 Physics Chapter 1 MCQ can be of extreme help as you will be aware of all the concepts. Explanation: Electric field gives the information on field strength, direction, and nature of the charge. 42. ii) This theorem is applied over a________ surface: iii) Gauss theorem does not depends upon theof surface: iv) If we increase the charge enclosed by the surface then electric flux will: v) Net flux linked to a closed surface around a charge particle is times the charge. Option A : 12 x 104. (d) none of these. To infinite plate parallel sheets separated by a distance D have equal and opposite uniform charge densities . (b) N C m-2 A cylinder of radius R and length l is placed in a uniform electric field E parallel to the axis of the cylinder. Answer Question 2. The charge given to any conductor resides on its outer surface, because (a) the free charge tends to be in its minimum potential energy state(b) the free charge tends to be in its minimum kinetic energy state(c) the free charge tends to be in its maximum potential energy state. The force between two point charges when dielectric constant of the medium in which they are held increases. (a) $\frac {}{2}$ 10. Q.2. A charge Q is divided into two parts of q and Q-q. It allows students to test their knowledge and answering skills in the given time frame. If theseare connected by a conducting wire, the final charge on the bigger sphere is (a) 2 102C(b) 3 102C(c) 4 102C(d) 1 102C, Question. (d) no charge exists outside the surface. (d) gives protons to silk. Due to friction between skin and cloths, electrostatic charge is built up on the skin. Then (a) the divergence of leaves will not be affected(b) the leaves will diverge further(c) the leaves will collapse(d) the leaves will melt, Question. Two charges 10 pC and 5 pC are placed 20 cm apart. Your Mobile number and Email id will not be published. Question 24. (a) 1 Multiple Choice Questions On Electric charge and Fields with answers. When two charged spheres are connected with a wire, the electric charge on them is shared: What is the angle between the electric dipole moment and the electric field due to it on the axial line? (d) friction and induction both. Electric Charges and Fields Class 12 MCQs Questions with Answers Question 1. Class 12 Physics Chapter 1 MCQs Online Test with Answer Electric Charges and Fields Instructions for This (Multiple Choice Questions) There are 25 questions in this quiz. Therefore, the magnitude of the force i equal hen kept in an electric field. There are two charges +2microC and -3microC. (Additivity of Charges) The total charge of an isolated system is always conserved. If Ea be the electric field strength of a short dipole at a point on its axial line and Ee that on the equatorial line at the same distance, then, 32. An electron and a proton are placed in the same uniform electric field. The insulation property of air breaks down when the electric field is 3 106 Vm1. The unit of electric dipole moment is X has excess charge of -1.6 x 10-6 C composed to Y, X has to give a charge -0.8 x 10-6 C if charge on both have to be the same, The charge on one electron is -1.6 x 10-19 C, The number of electrons required to transfer a charge of -0.8 x 10-6 C =. (c) $\frac {}{2_0}$ (c) $\frac {m_p}{m_e}$ The number of lines forces terminating on the spare will be more than those emerging from it, Reason (R) The surface charge density at a point on the sphere nearest to the point charge will be negative and maximum in magnitude compared to other points on the sphere, 9. The value of total flux that is coming out a wall is (a) Q /o(b) Q / 3o(c) Q / 4o(d) Q / 6o, Question. Class A CDL Driver - $370 per shift. The surface considered for Gausss law is called 17. (c) Gaussian surface It means that: (c) chemical reaction only This phenomenon is more significant in winters because due to low humidity, charge has a tendency to stay longer on the body. An electric dipole is placed in a uniform electric field. Question 5. The potential energy of the positively charged particle placed at the mid point O will be . Which one of the following is a bad conductor? (b) PE tan Solving these chapter-wise MCQs will help students to score good marks in the final exam. | Best Courses & High Paying Jobs after Bachelor of Arts, How to become a Cricketer and make it your Career | Step by Step Guide to Join Indian Cricket Team, CA After Graduation Eligibility, Admission, Fees, Duration, Syllabus, Career Prospects, 10 Lines about Myself for Students and Children in English. A unit Coulomb charge is one which when placed in air at a distance of 1 m from an equal and similar charge repel it with a force of Consider a region inside which, there are various types of charges but the total charge is zero. 1 . 1. (a) Farad Chapter 1: Electric Charges and Fields MCQ, Chapter 4: Moving Charges And Magnetism MCQ, May increase slightly or may decrease slightly, Due to lack of humidity and rubbing with clothes, charge accumulate on human body which is discharged via sparking, Due to cold, electrostatic charge on body finds a lower resistance path to the skin of others body, He static charge on sweaters worn by the two persons is different, hence discharge through sparking occurs, Similar to the lighting, extremely high potential exists on both the bodies and hence they discharge through sparking, Bits of paper gets attracted due to gravitational force, Due to electromagnetic effect, bits of paper are attracted, Comb gets charged by friction and attract bits of paper, Be attracted to the point charge and swing toward it, Be repelled from the point charge and swing away from it, Depends on the distance between the two nucleus, It will move in the direction of the field, It will move opposite to the direction of the field, It will move perpendicular to the direction of the field, Total positive charge of the universe is constant, Total negative charge of the universe is constant, Total number of charged particles in the universe is constant, The total charge of the universe is constant, the electric forces acting on them will be equal, the magnitudes of the forces will be equal, the magnitude of their acceleration will be equal, The net electric force on the dipole must be zero, The net electric force on the dipole maybe zero, The torque on the dipole due to field must be zero, The torque on the dipole due to the field may be zero, exist only in the immediate vicinity of electric charges, exist only when both positive and negative charges and near one and other, Gausss law is not much useful in calculating electrostatic field when the system has some symmetry, Gausss law is based on the Inverse Square dependence on distance contained in the Coulombs law, Gausss law is true for any closed surface, The term Q on the right side of gases law includes the sum of all charges in closed by the surface, Will be parallel and in the same direction, at an angle tilted away from the diameter, The total charge of the ring may be zero, although everywhere, The charge on the ring may be distributed non-uniformly, Both have same kinetic energy at any instant, Both have same magnitude of momentum at any instant. (b) zero (d) /0. At points outside the region (a) the electric field is necessarily zero. Download PDF. Students can solve NCERT Class 12 Physics Electric Charges and Fields MCQs Pdf with Answers to know their preparation level. Topic: Electric Flux Number of Questions: 10 Target: Class 12th Board Exam INDEX Let's Start 1. Coulombslaw correctly describes the electric force that (a) binds the electrons of an atom to its nucleus(b) binds the protons and neutrons in the nucleus of an atom(c) binds atoms together to form molecules(d) binds atoms and molecules together to form solids, Question. Any electrical shock cage receives, pass harmlessly around the outside of the cage. A hemisphere is uniformly charged positively. See Answer 3. The property which differentiates two kinds of charges is called ____________. The electric field strength at P1 is E1 and that at P2 is E2 If distance between P1, P2 is r, then which of the following statement is true? Hence, electrical discharge may occur when a man touches somebody else. We have given these Electric Charges And Field Class 12 Physics MCQs Questions with Answers to help students understand the concept. 8. (a) 5 106 NC-1 Find the relation between q and Q when the net force on Q is zero. When distance between two charges is reduced to one-half of the original distance, the force between them will remain the same if one of the charges is made: If a charge q is placed at the centre of the line joining two equal charges Q such that the system is in equilibrium then the value of q is (a) Q/2(b) Q/2(c) Q/4(d) Q/4, Question. The electric field at a point on a diameter away from the centre is directed: 34. 8. Answer: absolute permittivity, absolute permittivity. Calculate the electric dipole moment of the system. Assertion (A) The charge on any body can be increased or decreased in terms of e, Reason (R) Quantization of charge means that the charge of a body is integral multiple of e, 2. Hence, the glass rod becomes positive, and silk becomes negative. 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The MCQs for Grade 12Electric Charges and Fieldshave been updated based on the latest syllabus and examination guidelines issued by CBSE, NCERT and KVS. (d) Plane surface, 2. Question. (d) the free charge tends to be in its maximum kinetic energy state, Question. Which of the following figures represent the electric field lines due to a single negative charge? Electric Charges and Fields Class 12 Physics MCQs are prepared for a better understanding of the concept. 7. (d) -1/4, 5. 43. Two charges, one +5 C, and the other -5 C are placed 1 mm apart. (b) friction (a) newton 2. (a) 9 109 N The total flux through the faces of the cube with side of length a if a charge q is placed at corner A of the cube is, 3. (a) Zero(b) 5 mCm2(c) 20 mCm2(d) 8 mCm2, Question. Explanation: If the distance of a point charge, kept on the axis of a dipole, is sufficiently large than the separation between the charges of a dipole, then it can be shown that the electric field E at a distance r from the dipole varies as E 1/r 3.Now if the distance becomes 2r, electric field intensity will decrease by a factor of 2 3 = 8 times. Answer: (a) the net charge inside the surface is zero. See below free multiple-choice questions for Class 12Electric Charges and Fields. A hollow insulated conduction sphere is given a positive charge of 10 mC. Thus, the rod gets positively charged and the cloth gets negatively charged. If the distance between them is tripled, then the force between the charges will be, 37. is a central force in nature. The position of the charge inside the enclosing surface is changed in such a way that the total charge remains constant. If a copper plate of thickness 2/ d is kept between them, the effective force will be (a) F/2(b) zero(c) 2F(d)2 F, Question. E = 2/4?or = (9 x 109 x 2 x 2.5 x 10-6) / 5 x 10-2 = 9 x 105 NC-1, The charge on the ring must be uniformly distributed. (c) farad SI unit of permittivity of free space is Two neutrons are placed at some distance apart from each other. The maximum charge that can be given to a sphere of diameter 5 m is approximately (a) 2 102C(b) 2 103C(c) 2 104C(d) 2 105C, Question. Assertion (A) Electrostatic field line start at positive charges and end at negative charges, Reason (R) Field lines are continuous curve without any breaks and they form a closed loop. If a unit positive charge is kept in air. The total flux through the faces of the cube with side of length a if a charge q is placed at corner A of the cube is Answer 3. Oven produces microwaves that are oscillating electromagnetic fields and produce torque on the water molecules. The potential energy in inversely proportional to square of distance between the charges. These MCQs are very important for students who want to score high in CBSE Board, NEET and JEE exam. (a) E/2(b) E/4(c) E/6(d) None of these, Question. (a) one fourth In comparison With the electrostatic force between two electrons, the electrostatic force between two protons is: If the coulomb repulsion between them when they are separated , is to be maximum, the ratio of Q/q is, 11. Drop and hook 53' dry vans. Electric charge is quantized and charge on a body can be expressed as, q = ne, where n is an integer and e = 1.6 10 -19 C. The minimum value of the dielectric constant is 1 for free space. Same charges repel each other while unlike nature of charge attract each other. Two metallic spheres of radii 1 cm and 3 cm are given charges of 1102C and 5102C, respectively. Which among the following is false about Coulomb force: It is a central force. The surface density on the copper sphere is s. The electric field strength on the surface of the sphere is (a)(b)/2(c) Q / 2o(d) Q /o, Question. The electric field strength at a distance r from a charge q is E. What will be electric field strength if the distance of the observation point is increased to 2 r? The total flux over the curved surface of the cylinder is (a) zero(b)R2E(c) 2R2E(d) E /R2, Question. (c) E2 = rE1 An electric dipole has the magnitude of its charge as q and its dipole moment is p. It is placed in uniform electric field E. If its dipole moment is along the direction of the field, theforce on it and its potential energy are respectively. Assertion (A) When charges are shared between any two bodies no charges is really lost but some loss of energy does occur, Reason (R) Some of the energy is dissipated in the form of heat, sparkling etc, 7. How many electrons can be added or removed from the sphere so that it still remains hanging? The electric intensity due to a dipole of length 10 cm and having a charge of 500 mC, at a point on the axis at a distance 20 cm from one of the charges in air, is (a) 6.25 107N/C(b) 9.28 107N/C(c) 13.1 1011N/C(d) 20.5 107N/C, Question. (c) gains protons from silk. The net field at the given point is the summation of fields of all the elements i.e., E = dE. The path will be a parabola, as the velocity will be resolved into two components, one parallel to electric field and one perpendicular to the electric field. The unit of electric dipole moment is (a) newton (b) coulomb (c) farad (d) debye 2. Class 12 Electric Charges and Fields MCQs Questions with Answers See below free multiple-choice questions for Class 12 Electric Charges and Fields. If positive charge is displaced along x axis, then that force will always act in a direction opposite to that of displacement and then test charge will always come back to its original position. The couple required to rotate it through an angle 6 the initial position is: The rate of decrease of electric field is different in the two cases in case of point charge is it decreases as 1/r2 but in the case of electric dipole, it decreases more rapidly as 1/r3. Charges q each are placed at each of the other two corners. Explanation: The dielectric constant of metals is infinite. What should be the value of Q in order to make the net force on q to be zero? (b) The term q on the right side side of Gausss law includes the sum of all charges enclosed by the surface. An object has total charge of -80 micro-coulomb on it. 1. i) An electric dipole is placed at an angle of 300 to a uniform electric field. This can be done with the correct choice of Gaussian surface. NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12. v) A point P lies on the perpendicular bisector of an electric dipole of dipole moment p. If the distance Of P from the dipole is r (much larger than the size of the dipole) then the electric field at P is proportional to: From the above article, you have practiced Electric Charges And Fields MCQ of Class 12 Physics Chapter 1. Charges Q each are placed at each of two opposite corners of a square. (a) electric flux Tamilnadu Board Class 10 English Solutions, Tamilnadu Board Class 9 Science Solutions, Tamilnadu Board Class 9 Social Science Solutions, Tamilnadu Board Class 9 English Solutions, MCQ Questions for Class 12 Physics with Answers, MCQ Questions for Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes with Answers, MCQ Questions for Class 12 Physics Chapter 2 Electrostatic Potential and Capacitance with Answers, NCERT Extra Questions for Class 6, 7, 8, 9, 10, 11, and 12, Full Form of MBBS, BDS, BAMS, BUMS, B. Sc. The dipole will experiencea torque as well as & translational force. The electric field strength on the surface of Sphere of radius r is: The SI unit of electric flux is The electric potential V at any point (x, y, z), all in meters in space is given by V = 42 volt. Question 6. The ratio of charges Q and q is Electrostatic field lines are continuous curves without any breaks. (d) N C-1 m2, 9. ii) A circular annulus of inner radius r and outer radius R has a uniform charge density a. State true or false: The total charge of the isolated system is NOT conserved. The resultant electric field at centre of a ring due to ring is zero. Due to the positive charge present, negative charge will be induced. (d) all of these. What will be the electric field at the centreof the sphere if its radius is 2 metres? Download Chapter 1 Electric Charges and Fields MCQs PDF by clicking on the button below. (a) the net charge inside the surface is zero. Assertion (A) The properties that the force with which two charges attract or repel each other are not affected by the presence of a third charge. Kinetic energy and momentum can be different if throwing angles are different. (a) N C-1 m-2 The total number of charge in the body is m.e + n(-e) = (m-n)e. Since n and m are integers, their difference is also an integer. If a body is charged by rubbing it, then it may lose or gain electrons. Once you select your answer, it can't be undone. Check the multiple-choice questions for the 12th Class Physics Electric Charges and Fields Chapter. The electric field at a point on axial line of a dipole and direction of the dipole moment. Four charges +Q, -Q, +Q and -Q are situated at the corners of a square; in a sequence then at the centre of the square, 8. (a) Closed surface Question 2. What will be the ratio of the acceleration of electron to that of proton? If the dipole moment and the electric field are parallel to each other, then the torque will be zero as pEsin0 = 0. These Electric Charges And Field MCQs have been prepared by expert teachers and subject experts based on the latest syllabus and pattern of CBSE Term 1 examination. (b) 2 q.E and min. This position is for a regional driver that starts in SLC then drives to Wamsutter WY swaps trailers and drives back to SLC. (d) the work done to move a charged particle along a closed path, away from the region will not be zero. Also, coulombs force is very strong than gravitational force. That ball will, 10. (b) 1/4 No one can change that basic equation, but with forecasters predicting a cold winter blowing our way, there are steps you can take to keep energy bills from giving you the chills. (d) debye. Assertion (A) If there exists coulomb attraction between two bodies both of them must be charged, Reason (R) In coulomb attraction of two bodies are positively charged, 8. F/8. The charge on an electron and proton is called a fundamental charge. (a)/o(b)/2o(c) E0(d) 2/o, Question. In case you have any queries, please post in the comments section below. What is the dielectric constant of a metal? (c) q.E and min(d) zero and min. (b) Spherical surface Multiple Choice Questions Question 1. (d) None of these, Question 9. Therefore, the total charge of the universe in constant. Download PDF 33. What is the electric field intensity at the mid point on the line joining the centre of two point charges? Coulomb esu A.s A.m 3. Two identical charges are placed at a distance 2a apart as shown in figure. Answer: p = q 2a = 5 10 -6 10 -3 = 5 10 -9 Cm. Which one of the following is the unit of electric field? Two forces are acting on q one due to 4q and second due to Q. iii) What is the dimension of linear charge density? Which of the following statements is not true about Gausss law, 27. The proton and electrons have equal and opposite charges. If an electron has an initial velocity in a direction different from that of an electric field, the path of the electron is: 30. We have put together these NCERT MCQ Questions of Electric Charges And Field for Class 12 Physics Chapter 1 with Answers for the practice on a regular basis to score high in exams. (c) electric potential ii) An electric dipole is placed in a nonuniform electric field, what acts on it? (a) inversely as their capacity Which of the following statements is not true about Gausss law? Gravitational force is the weakest force. If the sizes of charged bodies are very small compared to the distances between them, we treat them as ____________. If thrown along the field, they may travel in straight line. The maximum torque experienced by the dipole is, iv) Let Ea be the electric field due to a dipole in its axial plane distant I and let Eq be the field in the equatorial plane distant l. The relation between Ea and Eq is. (b) 1. (c) zero A glass rod rubbed with silk is used to charge a gold leaf electroscope and the leaves are observed to diverge. Question 5. Two-point charges of+3 C each are 100 cm apart. 1 . 18. An electric charge is held at rest in a region filled with a non-uniform magnetic field. (b) 18 106 NC-1 AR & Other Type MCQs Electric Charges and Fields Physics Practice questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, NCERT Exemplar Questions and PDF Questions with answers, solutions, explanations, NCERT reference and difficulty level According to the principal of conservation of charge, the total amount of positive charge minus the total amount of negative charge in the universe is constant. As soon as it is left free. In this setup, if the consecutive charges have opposite sign, then the electric field in newton/coulomb at x=0 is. more; 1 Answer. Why? A soap bubble is given negative charge, its radius will (a) increase(b) decrease(c) remain unchanged(d) fluctuate, Question. Electric Charges And Field MCQChapter 1 Electric chargeis a basic property of matter carried by elementary particles which get affected by electric field and magnetic field. Answer: 2. If a body is charged by rubbing it, its weight. A spherical conducting ball is suspended by a grounded conducting thread. The surface considered for Gauss's law is called (a) Closed surface (b) Spherical surface (c) Gaussian . When it is brought closer to paper bits, they get polarized and the positive part stacks to the comb due to electrostatic attraction. (a) -PE cos find force between 2 charged spheres having charges 210^-7c and 310^-7c p. In Coulombs law, the constant of proportionality has units as. A point charge q1 exerts a force F upon another point charge q2. The field at a point P on the other side of the plane is (a) directed perpendicular to the plane and away from the plane(b) directed perpendicular to the plane but towards the plane(c) directed radially away from the point charge(d) directed radially towards the point charge. Refer to the Electric Charges and Fields Class 12 MCQs Questions with Answers here along with a detailed explanation. The field at a distance r from a long straight wire of charge per unit length is, 36. When the separation between two charges is increased the electric potential energy of the charges, 21. (a) field strength If work done in moving a charge 0.2 C through a distance of 2m along a line making an angle of 60 degree with X-axis is 4.0 joule, what is he value of E? (d) None of these. Thus, heat generated is used to heat the food. The equilibrium of a positive test charge placed at the point O midway between them is stable for displacements along the x-axis, 5. 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