In an electrical circuit drawn below the amount of charge stored in the capacitor is___ $\mu \mathrm{C}$.
$50$
$60$
$70$
$80$
In a charged capacitor, the energy resides
A parallel plate capacitor whose capacitance $C$ is $14\, pF$ is charged by a battery to a potential difference $V =12\, V$ between its plates. The charging battery is now disconnected and a porcelin plate with $k =7$ is inserted between the plates, then the plate would oscillate back and forth between the plates with a constant mechanical energy of $..........pJ$. (Assume no friction)
The energy of a charged capacitor is given by the expression ($q$= charge on the conductor and $C$ = its capacity)
A battery does $200 \,J$ of work in charging a capacitor. The energy stored in the capacitor is ......... $J$
Charge $'q'$ on a capacitor varies with voltage $'V'$ as shown. The area of $\Delta OPM$ represents