Question

A cylindrical capacitor has charge Q and length L. If both the charge and length of the capacitors are doubled, by keeping other parameters fixed, the energy stored in the capacitor-

• A. Remains same
• B. Increases two times
• C. Decreases two times
• D. Increases four times

Answer 1

Answer: (B)

Increases two times

Answer 2

Use U =, C =