If $C$ is the capacitance and $V$ is the electric potential,then the dimensional formula of $C V^{2}$ is

The total energy stored in the capacitor system shown in the figure will be (in $\mu J$)

On increasing the plate separation of a charged condenser,the energy

$A$ $6\,\mu F$ capacitor is charged from $10\,V$ to $20\,V$. The increase in energy will be:

$A$ variable condenser is permanently connected to a $100 \ V$ battery. If the capacity is changed from $2 \ \mu F$ to $10 \ \mu F$,then the change in energy is equal to:

$A$ parallel plate capacitor has a uniform electric field $E$ in the space between the plates. If the distance between the plates is $d$ and the area of each plate is $A,$ the energy stored in the capacitor is