Answer to Question #312727 in Solid State Physics for Mikay

Question

16. In a circuit 20 C of charge is passed through a battery in a given time. The plates of the battery are maintained at PD of 20 V . How much work is done by the battery?

Answer 1

The work done by the battery is given by

$$W=qV\\ =\rm 20\: C*20\: V=400\: J$$