The value of electric field at the centre of hollow spherical metallic shell of radius 5m, having positive charge of 10C is

The electric field at a distance 2 cm from the centre of a hollow sphereical coducting shell of radIus 4 cm having a charge of 2xx10^-3 C on its surface is

Electric field at centre of a uniforly charged semicirlce of radius a is

A ball with charge -50 e is placed at the centre of a hollow spherical shell has a net charge of -50e . What is the charge on the shell's outer surface ?

A spherical conductor having charge q and radius r is placed at the centre of a spherical shell of radius R and having charge Q (R gt r). The potential difference between the two is

A body of mass m is placed at the centre of the spherical shell of radius R and mass M. The gravitation potential on the surface of the shell is

Electric charge are distributed in a small volume. The flux of the electric field through a spherical surface of radius 10cm surrounding the total charge is 25 V m. The flux over a concentric sphere of radius 20 cm will be

Two concentric metallic spherical shells are given positive charges . Then

The electric field at a distance 3R//2 from the centre of a charge conducting spherical shell of radius R is E . The electric field at a distance R//2 from the centre of the sphere is

The electric field at a distance 3R//2 from the centre of a charge conducting spherical shell of radius R is E . The electric field at a distance R//2 from the centre of the sphere is

Intensity of gravitational field inside the hollow spherical shell is