The energy stored in a capacitor of capacitance $C$ charged to a potential $V$ is:

$A$ capacitor having a capacity of $2.0 \; \mu F$ is charged to $200 \; V$ and then the plates of the capacitor are connected to a resistance wire. The heat produced in joules will be:

Energy per unit volume for a capacitor having area $A$ and separation $d$ kept at potential difference $V$ is given by

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:

$A$ capacitor of capacity $50\,\mu F$ is charged to $10\;V$. Its energy is equal to:

Two capacitors of capacitance $2 \ \mu F$ and $4 \ \mu F$ are connected in series. If a potential difference of $10 \ V$ is applied across this combination,what will be the ratio of the energy stored in these capacitors?