Question

Capacitor is to have an energy content of 20J it must be placed across potential difference of?

Answer 1

The voltage required on a capacitor for it to store a particular amount of energy depends on the capacitance of the capacitor. The energy stored on a capacitor is:

Energy = (1/2) × C × V².

Solving for V gives: V = square root( 2 × Energy/C).

So, if a capacitor of 1 Farad stores 20 Joules, then it presents a voltage of:

V = square root(2 × 20/1) = square root of 40 = 6.325 volts.

A one microfarad capacitor must be charged to 6325 volts to store that same amount of energy.

Hope it helps!

Brainliest please! :)