The energy stored in the capacitor is

$A$ parallel plate capacitor having plate area $A$ and separation $d$ is charged to a potential difference $V$. The charging battery is disconnected and the plates are pulled apart to four times the initial separation. The work required to increase the distance between plates is:

The amount of work done in increasing the voltage across the plates of a capacitor from $5 V$ to $10 V$ is $W$. The work done in increasing it from $10 V$ to $15 V$ will be

$A$ $4\, \mu F$ capacitor is charged to $400\, V$ and then its plates are connected through a resistance. The heat produced in the resistance is ....... $J$.

If the charge on a body is increased by $2 \ C$,the energy stored in it increases by $21 \%$. The original charge on the body in coulomb is:

The energy stored in a capacitor of capacity $C$ which has been raised to a potential $V$ is given by