Question

If initial charge on all capacitors were zero, work done by the battery in the circuit shown is

Answer 1

Explanation:

The energy stored on a capacitor can be expressed in terms of the work done by the battery. Voltage represents energy per unit charge, so the work to move a charge element dq from the negative plate to the positive plate is equal toVdq , where V is the voltage on the capacitor. The voltage V is proportional to the amount of charge which is already on the capacitor.

Element of energy stored: dE=dW=Vdq

Hence, relation is E=W