Question

A capacitor is charged and battery is disconnected .Now the distance between the plates is increased slightly

• A. Forces between the plates will decrease
• B. The potential energy of the capacitor will decrease
• C. Potential differences between the plates will decrease
• D. Potential differences between the plates will increase

Answer 1

The correct option is D Potential differences between the plates will increase

Charge stored on the capacitor remains the same if the battery is disconnected.

So, electric field between the plates remains the same.

Potential difference $V=Ed$

Thus, potential difference between the plates increases with increase in separation between the plates.