A solid sphere of radius R is charged with charge Q uniformly. the potential difference between its centre and its surface is

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

An insulating solid sphere of the radius R is charged in a non - uniform manner such that the volume charge density rho=(A)/(r ) , where A is a positive constant and r is the distance from the centre. The potential difference between the centre and surface of the sphere is

A hollow metallic sphere of radius 0.1 m is charged to a potential of 5 V. The potential at its centre is

A solid sphere of radius R is charged uniformly through out the volume. At what distance from its surface is the electric potential 1/4 of the potential at the centre?

A solid conducting sphere having a charge Q is surrounded by an uncharged concentric conducting hollow spherical shell. Let the potential difference between the surface of the solid sphere and that of the outer surface of the hollow shell be V. If the shell is now given a charge of -3Q , the new potential difference between the same two surfaces is :

A solid sphere of radius R has charge q uniformly distributed over its volume. The distance from its surface at which the electrostatic potential is equal to half of the potential at the centre is

A solid sphere of radius R is charged uniformly. The electrostatic potential V is plotted as a function of distance r from the centre of th sphere. Which of the following best represents the resulting curve?

A solid conducting sphere, having a charge Q , is surrounded by an unchanged conducting hollow spherical shell. Let the potential difference between the surface of the solid sphere and that of the outer surface of the hollow shell be V . If the shell is now given a change of -4Q , the new potential difference between the same tow surface is :

A solid metall sphere of radius R has a charge + 2Q. A hollow spherical shell of radius 3R placed concentric with the sphere has charge - Q. Calculate the potential difference between the spheres.

A solid sphere of radius R has charge q uniformly distributed over its volume. The distance from it surfce at which the electrostatic potential is equal to half of the potential at the centre is