‘Inside a conductor electrostatic field is zero’. Explain.
In the static situation, when there is no current inside or on the surface of the conductor, the electric field is zero everywhere inside the conductor.
A conductor has free electrons, the free charge carriers would experience force and drift.
In the static situation, the free charges have so distributed themselves that the electric field is zero everywhere inside.
$64$ small drops of mercury, each of radius $ r$ and charge $q$ coalesce to form a big drop. The ratio of the surface density of charge of each small drop with that of the big drop is
Two spheres of radius $R$ and $2R$ having charge $Q$ and $2Q$ respectively are placed far away from each other. How much charge will flow when key $'k'$ is pressed ?
Can a metal be used as a medium for dielectric
Assertion : A metallic shield in form of a hollow shell may be built to block an electric field.
Reason : In a hollow spherical shield, the electric field inside it is zero at every point.
If electric potential of the inner sphere is $10\, volt$ and that of the outer shell is $50\, volt$ then potential at common centre is :-......$V$