NCERT Class 12 Chapter 2 Physics Electrostatic Potential and Capacitance MCQs Quiz 1

1. Which of the following is a scalar quantity?

Electric field

Electric potential

Electric force

None of the above

2. Equipotential surfaces for a point charge are:

Concentric circles

Concentric spheres

Parallel planes

None of the above

3. Electric potential at a point is defined as:

Work done to bring a unit positive charge from infinity to that point.

Work done to bring a unit positive charge from one point to another.

Force experienced by a unit positive charge at that point.

None of the above.

4. Two charges q1q_1q1 and q2q_2q2 are placed at a distance rrr apart. If the distance is doubled, the force between them becomes:

Double

Half

One-fourth

Four times

5. If the distance between two charges is tripled, the electric potential energy of the system will:

Remain the same

Increase three times

Decrease by one-third

Decrease by one-ninth

6. The potential at the center of a charged hollow sphere is:

Zero

Equal to the potential on the surface

Less than the potential on the surface

Greater than the potential on the surface

7. Which of the following is true about electric dipole moment?

It is a scalar quantity.

It is always positive.

It is directed from negative to positive charge.

It depends on the medium.

8. A parallel plate capacitor is charged and then disconnected from the battery. If the distance between the plates is increased:

Capacitance increases

Potential difference increases

Charge increases

Electric field increases

9. The capacitance of a capacitor is defined as:

The charge stored per unit potential difference.

The potential difference per unit charge stored.

The energy stored per unit charge.

None of the above

10. If a conductor is placed in an external electric field, the field inside the conductor will be:

Equal to the external field

Twice the external field

Half the external field

Zero

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