If there are $n$ capacitors in parallel connected to $V$ volt source, then the energy stored is equal to
$CV$
$\frac{1}{2}nC{V^2}$
$C{V^2}$
$\frac{1}{{2n}}C{V^2}$
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 area of each plate is $A,$ the energy stored in the capacitor is
A capacitor of capacitance $C$ is charged with the help of a $200 \,V$ battery. It is then discharged through a small coil of resistance wire embedded in a thermally insulated block of specific heat capacity $2.5 \times 10^2 \,J / kg$ and mass $0.1 \,kg$. If the temperature of the block rises by $0.4 \,K$, the value of $C$ is
The separation between the plates of a isolated charged parallel plate capacitor is increased. Which of the following quantities will change?
A $40$ $\mu F$ capacitor in a defibrillator is charged to $3000\,V$. The energy stored in the capacitor is sent through the patient during a pulse of duration $2\,ms$. The power delivered to the patient is......$kW$
Energy per unit volume for a capacitor having area $A$ and separation $d$ kept at potential difference $V$ is given by