Suppose you wanted to store 3 mC of charge in a capactoracro

Suppose you wanted to store 3 mC of charge in a capactoracross a voltage of 120V..........What capacitance is needed in nF?

C=

Solution

Voltage V = 120 V
Charge Q = 3 * 10^-3 C

We know,
Q = C*V
3*10^-3 = C * 120
C = 25 * 10^-6 F
In Nano Farad,
C = 25000 nF