
A parallel plate capacitor of $6 \mu \mathrm{F}$ is connected across battery and charged. The battery is then disconnected and oil of dielectric constant $\mathrm{k}=2.1$ is introduced between the plates. What will be the charge on capacitor?


Important Questions on Electrostatics
The capacity of a parallel plate condenser is . Its capacity, when the separation between plates is doubled and area is halved will be

A cylindrical capacitor has charge $Q$ and length $L$. If both the charge and length of the capacitor are doubled by keeping other parameters fixed, the energy stored in the capacitor

Consider the situation shown in the figure. The capacitor has a charge on it whereas is uncharged. The charge appearing on the capacitor a long time after the switch is closed is

To reduce the capacity of a parallel plate capacitor, separation between the plates is

Capacitance of parallel plate capacitor has dimensions

The capacitance of a parallel plate capacitor can be increased by

An electric field of magnitude can be produced by applying a potential difference of to a pair of parallel metal plates separated by

The distance between the circular plates of a parallel plate condenser in diameter, in order to have same capacity as a sphere of radius is
