A $400\, pF$ capacitor is charged with a $100\, V$ battery. After disconnecting battery this capacitor is connected with another $400\, pF$ capacitor. Then find out energy loss.
$1\times10^{-6}\, J$
$2\times10^{-6}\, J$
$3\times10^{-6}\, J$
$4\times10^{-6}\, J$
A parallel plate capacitor after charging is kept connected to a battery and the plates are pulled apart with the help of insulating handles. Now which of the following quantities will decrease?
The separation between the plates of a isolated charged parallel plate capacitor is increased. Which of the following quantities will change?
An electron with kinetic energy $K _{1}$ enters between parallel plates of a capacitor at an angle $'\alpha'$ with the plates. It leaves the plates at angle $' \beta '$ with kinetic energy $K _{2}$. Then the ratio of kinetic energies $K _{1}: K _{2}$ will be ....... .
Two small spheres each carrying a charge $q$ are placed $r$ metre apart. If one of the spheres is taken around the other one in a circular path of radius $r$, the work done will be equal to
If $E$ is the electric field intensity of an electrostatic field, then the electrostatic energy density is proportional to