Question

A parallel plate capacitor is charged to a definite potential and the charging battery is disconnected. Now if the plates of the capacitor are moved apart, then-

• A. The stored energy of the capacitor increases
• B. Charge on the capacitor increases
• C. Voltage of the capacitor decreases
• D. The capacitance increases

Answer 1

Answer: (A)

The stored energy of the capacitor increases

Answer 2

Battery disconnected

So Q = constant ̃ d↑ ̃ C↓

(i) U = Q²/2C µ 1/C ̃ U­ (ii) Q ↔

(iii) V µ 1/C ̃ V­ (iv) C↓