Question

a counductor of capacity 20mF is charged to 1000V.the potential energy of the conductor will be

Answer 1

The energy stored in the capacitor will be 10 kilojoules.

We know that energy stored in a capacitor = cV²/2

Given that

Capacitance = 20 mF = 20 x 10⁻³

Voltage, V = 1000 v

Hence ,

energy = cV²/2

= 20 x 10⁻³ x 1000² / 2

= 10⁴ j

= 10 kj

Hence the energy stored in the capacitor will be 10 kilojoules.