What is a surface density of charge ? Show that surface density of charge is different at different points of an irregular shaped conductor.

The surface charge density of an irregularr shaped conductor is

If S is the surface area of charged conductor on which the surface density of charge is and K is the dielectric constant of the medium around it, then outward force acting on the surface of the conductor is

Across the surface of a charged conductor

The electric field near the surface of the earth is 300V//m . The surface density of charge on the earth's surface is

A spherical charged conductor has sigma as the surface density of charge. The electric field on its surface is E. If the radius of the sphere is doubled keeping the surface density of charge unchanged, what will be the electric field on the surface of the new sphere -

A soap bubble (surface tension =T ) is charged to maximum surface density of charge = sigma . When it is just going to burst. Its radius R is given by:

If sigma is surface density of charge on the charged cylinder of radius R, then electric intensity E at outer point at a distance r from its axis is

Define surface density of charge and potential of a charged and potential of a charged spherical conductor. Establish a relation between them.

A number of spherical conductors of different radii are given charge such a that the charge density of each condutor is inversely proportional to its radius. The conductors will have