When the separation between two charges is increased, the electric potential energy of the charges:
1. increases
2. decreases
3. remains the same
4. may increase or decrease

If a positive charge is shifted from a low-potential region to a high-potential region, the electric potential energy: 
1. increases
2. decreases
3. remains the same
4. may increase or decrease

Two equal positive charges are kept at points A and B. The electric potential at the points between A and B (excluding these points) is studied while moving from A to B. The potential

1.  continuously increases

2.  continuously decreases

3.  increases then decreases

4.  decreases then increases.

The electric field at the origin is along the positive x-axis. A small circle is drawn with the centre at the origin cutting the axes at points A, B, C and D having coordinates (a, 0), (0, a), (– a, 0), (0, – a) respectively. Out of the points on the periphery of the circle, the potential is minimum at

1.   A

2.   B

3.   C

4.   D

Consider the situation of the figure. The work done in taking a point charge from P to A is W_A , from P to B is W_B and from P to C is W_C. Then:

1.  W_A < W_B < W_C

2.   W_A > W_B > W_C

3.   W_A = W_B = W_C

4.   none of these

A point charge q is rotated along a circle in the electric field generated by another point charge Q. The work done by the electric field on the rotating charge in one complete revolution is

1.  zero

2.  positive

3.  negative

4.  zero if the charge Q is at the centre and nonzero otherwise.

The electric field and the electric potential at a point are E and V respectively.

(a) If E = 0, V must be zero.

(b) If V = 0, E must be zero.

(c) If E ≠ 0, V cannot be zero.

(d) If V ≠ 0, E cannot be zero

Choose the coorect option 

1. (a) only 

2. (b) , (c) 

3. (c) , (d) 

4. None of these 

The electric potential decreases uniformly from 120 V to 80 V as one moves on the x-axis from x = –1 cm to x = +1 cm. The electric field at the origin

(a) must be equal to 20 V cm^–1

(b) may be equal to 20 V cm^–1

(c) may be greater than 20 V cm^–1

(d) may be less than 20 V cm^–1

Choose the coorect option 

1. (a) only 

2. (b) , (c) 

3. (c) , (d) 

4. (a) , (d) 

Which of the following quantities do not depend on the choice of zero potential or zero potential energy?

(a) potential at a point
(b) potential difference between two points
(c) potential energy of a two-charge system
(d) change in potential energy of a two-charge system.
Choose the correct option: 
1. (a) only 
2. (b), (c) 
3. (b), (d) 
4. (a), (d) 

The electric field in a region is directed outward and is proportional to the distance r from the origin. Taking the electric potential at the origin to be zero,

(a) it is uniform in the region

(b) it is proportional to r

(c) it is proportional to r²

(d) it increases as one goes away from the origin.

 Choose the coorect option 

1. (a) only 

2. (b) , (c) 

3. (c) only 

4. (a) , (d)