The electric field intensity at a point near a sphere of radius r and surface density of `rho` in a medium of dielectric constant K is

The electric field intensity |vecE| at any point inside a charged sphere of radius r is

The electric intensity at a point near a charged conductor of surface charge density sigma is

A plane conductor with very large dimensions is charged such that surface charge density is 1.6xx10^(-2)C//m^(2) . The electric field intensity at a point near it if the conductor is in a medium of dielectric constant 5 is

The magnitude of the electric field on the surface of a sphere of radius r having a uniform surface charge density sigma is

The magnitude of the electric field on the surface of a sphere of a sphere of radius r having a unifrom surface charge density sigma is

The electric field intensity outisde the charged conductiong shpere of radius 'R' placed in a medium of permittivity in at a distance 'r' from the centre of the shhere in terms of surface charge density sigma is :

If infinite parallel plane sheet of a metal is charged to charge density sigma coulomb per square metre in a medium of dielectric constant K. Intensity of electric field near the metallic surface will be