MHT CET Physics question

PhysicsElectrostatic Potential and CapacitanceMHT CET

A capacitor of capacitance C has charge Q and stored energy is W. If the charge is increased to 3Q, the stored energy will be

Answer: (C)

Solution

, so for charge the energy is ; W/4, W/2 and 4W are wrong. Hence the correct option is (c).

Question ID VK-075340