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 $\mu J$)

$A$ parallel plate air capacitor has capacity $C$,distance of separation between plates is $d$,and potential difference $V$ is applied between the plates. The force of attraction between the plates of the parallel plate air capacitor is

Three identical capacitors are combined in different ways. For the same voltage applied to each combination,the one that stores the greatest energy is:

$A$ charge of $40\,\mu C$ is given to a capacitor having capacitance $C = 10\,\mu F$. The stored energy in ergs is

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