A $600 \mathrm{\mu F}$capacitor is charged by a $200 \mathrm{V}$ supply. It is then disconnected from the supply and is connected to another uncharged $600 \mathrm{\mu F}$ capacitor. How much electrostatic energy is lost in the process?

The capacity of a parallel plate capacitor with air is $18 \mathrm{pF}$ When a dielectric material is inserted in the space between the plates, its capacity becomes $108 \mathrm{pF}$.Calculate the permittivity of the material. What is the material?(${\mathrm{\epsilon }}_0=8.854\times {10}^{-12}{\mathrm{C}}^2{\mathrm{N}}^{-1}{\mathrm{m}}^{-2}$)

Taking the examples of charging capacitor, name the currents that are responsible for the process of charging and also state which current flow outside and which flow inside the capacitor?

You are to bring two charges ${\mathrm{q}}_{1 }\mathrm{and} {\mathrm{q}}_2$from infinity to the point represented by the potential ${\mathrm{V}}_1\mathrm{and} {\mathrm{V}}_2$ in an electrical field $\mathrm{E}.$. If the distance between ${\mathrm{q}}_1 \mathrm{and} {\mathrm{q}}_2$ within the field is $r$. Find the total work done in assembling the configuration.

 Imagine an electric field  $\mathrm{E}=\left(20\widehat{ \mathrm{i}}+30\widehat{ \mathrm{j}}\right) {\mathrm{NC}}^{-1}$ in a space. The potential at the origin is zero Find the potential at the $\left(2,2\right)\mathrm{m}$,

What is a capacitor? You know that the capacity of a parallel plate condenser is $C=\frac{{\epsilon }_0 A}{d}$. What will be its new capacitance $C\text{'}$ of the capacitor if a material of dielectric $K$ is inserted between the plates? Calculate the capacitance of the capacitor shown below.