Question

If the plates of a parallel plate capacitor connected to a battery are moved close to each other, then:

1. the charge stored in it. increases.
2. the energy stored in it, decreases.
3. its capacitance increases.
4. the ratio of charge to its potential remains the same.
5. the product of charge and voltage increases.

Choose the most appropriate answer from the options given below:

Options

• B, D and B only

• A, B and C only

• A, B and E only

• A, C and E only

Answer 1

A, C and E only

Explanation:

Capacitance (C) = `(epsilon_0 A)/d1

If d decreases, then C increases.

As the battery is connected, then V = constant

Now q ∝ C

i.e., if C increases, q also increases.

V remaining constant, q increases.

Hence, the product of charge and voltage, i.e., qV, also increases.