A conductor of capacity 20 mF is charged to 1000 V. the potential ener

1.	A conductor of capacity 20 mF is charged to 1000 V. the potential energy of the conductor will be A) 20 x 104 J B) 104 JC) 20 x 103 JD) 103 J
Answer» The correct option is B) 10⁴ J. The energy stored in the capacitor will be 10 kilo-joules. 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 kilo-joules.

A conductor of capacity 20 mF is charged to 1000 V. the potential energy of the conductor will be A) 20 x 104 J B) 104 JC) 20 x 103 JD) 103 J

Answer»

The correct option is B) 10⁴ J.

The energy stored in the capacitor will be 10 kilo-joules.

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 kilo-joules.