NCERT Class 12 Chapter 2 Physics Electrostatic Potential and Capacitance MCQ

NCERT Class 12 Chapter 2 Physics Electrostatic Potential and Capacitance MCQ | Questions & Answers: Here is an article for you that will help you take up the NCERT Class 12 Chapter 2 Physics Electrostatic Potential and Capacitance MCQ Quiz. Give it a try and submit the answers at the end to get the results.

Page 1 of 3

1. A positively charged particle is released from rest in an uniform electric field. The electric potential energy of the charge

A. remains a constant because the electric field is uniform

B. increases because the charge moves along the electric field

C. decreases because the charge moves along the electric field

D. decreases because the charge moves opposite to the electric field

2. Which of the following statement is true?

A. Electrostatic force is a conservative force

B. Potential at a point is the work done per unit charge in bringing a charge from any point to infinity.

C. Electrostatic force is non-conservative

D. Potential is the productof charge and work

3. Consider a uniform electric field in the z-
direction. The potential is a constant

A. for any x for a given z

B. for any y for a given z

C. on the x-y plane for a given z

D. all of these

4. A hollow metal sphere of radius 20 cm is charged such that the potential on its surface is 120 Volt. The potential at the centre of the sphere is

A. 80 V

B. 6 V

C. 120 V

D. Zero

5. The electrostatic potential on the surface of a charged conducting sphere is 100V. Two statements are made in this regard S₁ at any point inside the sphere, electric intensity is zero. S₂ at any point inside the sphere, the electrostatic potential is 100V. Which of the following is a correct statement?

A. S₁ is true but S₂ is false

B. Both S₁ and S₂ are false

C. S₁ is true, S₂ is also true and S₁ is the cause of S₂

D. S₁ is true, S₂ is also true but the statements are independant

6. 1 volt is equivalent to CBSE Class12 Physics Electrostatic Potential and Capacitance (6Q)

A. (a)

B. (b)

C. (c)

D. (d)

7. Equipotential surfaces

A. are closer in regions of large electric fields compared to regions of lower electric fields.

B. will be more crowded near sharp edges of a conductor.

C. will always be equally spaced.

D. both (a) and (b) are correct.

8. The work done in moving a positive test charge qo from infinity to a point P at a distance r from the charge q is

CBSE Class12 hysics Electrostatic Potential and Capacitance (8Q)

CBSE Class12 hysics Electrostatic Potential and Capacitance (8Q)

A. (a)

B. (b)

C. (c)

D. (d)

9. Consider the following statements and select the correct statement(s).
I. Electric field lines are always perpendicular to equipotential surface.
II. No two equipotential surfaces can intersect each other.
III. Electric field lines are in the direction of tangent to an equipotential surface.

A. I only

B. II only

C. I and II

D. I, II and III

10. the work done in bringing a unit positive charge from infinite distance to a point at distance x from a positive charge Q is W. Then the potential at that point is CBSE Class12 Physics Electrostatic Potential and Capacitance (10Q)

CBSE Class12 Physics Electrostatic Potential and Capacitance (10Q)

A. (a)

B. (b)

C. (c)

D. (d)

Page 2 of 3

11. In a region of constant potential

A. the electric field is uniform

B. the electric field is zero.

C. there can be no charge inside the region.

D. both (b) and (c) are correct

12. Electric field intensity is equal to

A. time rate of change of potential

B. minimum rate of change of potential with distance

C. maximum rate of change of potential with distance

D. none of the above

13. Equipotentials at a great distance from a collection of charges whose total sum is not zero are approximately

A. spheres

B. planes

C. paraboloids

D. ellipsoids

14. Consider a uniform electric field in the z-direction. The potential is a constant

A. for any x for a given z

B. for any y for a given z

C. on the x-y plane for a given z

D. all of these

15. A test charge is moved from lower potential point
to a higher potential point. The potential energy of
test charge will

A. remain the same

B. increase

C. decrease

D. become zero

16. Electric potential at a point located far away from the charge is taken to be

A. Unity

B. May be zero or infinite

C. Zero

D. Infinite

17. In a region, the potential is represented by V(x, y, z) = 6x – 8xy – 8y + 6yz, where V is in volts and x, y, z are in metres. The electric force experienced by a charge of 2 coulomb situated at point (1, 1, 1) is :

A. (a)

B. (b)

C. (c)

D. (d)

18. Equipotential surfaces

A. are closer in regions of large electric fields compared to regions of lower electric fields.

B. will be more crowded near sharp edges of a conductor

C. will always be equally spaced

D. both (a) and (b) are correct.

19. A charge of 6 mC is located at the origin. The work done in taking a small charge of -2 x 10^-9 C from a point P (0, 3 cm, 0) to a Q (0,4 cm, 0) is

A. 0.5 J

B. 1.12 J

C. 1.2 J

D. 0.9 J

20. A capacitor is charged by a battery. The battery is removed and another identical uncharged capacitor is connected in parallel. The total electrostatic energy of resulting system

A. decreases by a factor of 2

B. remains the same

C. increases by a factor of 2

D. increases by a factor of 4

Page 3 of 3

21. In a region of constant potential

A. the electric field is uniform.

B. the electric field is zero

C. there can be no charge inside the region

D. both (b) and (c) are correct

22. If a conductor has a potential V ≠ 0 and there are no charges anywhere else outside, then

A. there must be charges on the surface or in¬side itself.

B. there cannot be any charge in the body of the conductor

C. there must be charges only on the surface.

D. both (a) and (b) are correct

23. A hollow metal sphere of radius 5 cm is charged such that the potential on its surface is 10 V. The potential at the centre of the sphere is

A. 0 V

B. 10 V

C. same as at point 25 cm away from the surface

D. same as at point 5 cm away from the surface

24. Choose the correct option
Assertion : Electric potential and electric potential energy are different quantities.
Reason : For a system of positive test charge and point charge electric potential energy = electric potential.

A. Assertion is correct, reason is correct; reason is a correct explanation for assertion.

B. Assertion is correct, reason is correct; reason is not a correct explanation for assertion

C. Assertion is correct, reason is incorrect

D. Assertion is incorrect, reason is correct

25. A test charge is moved from lower potential point to a higher potential point. The potential energy of test charge will

A. remain the same

B. increase

C. decrease

D. become zero