[" 4."A" point charge "Q" is placed at the origin.Find the "],[" electrostatic energy stored outside the sphere of radius "],[R" centred at the origin."]

A point charge Q is placed at the origin . Find the electrostatic energy stored outside the sphere of radius R centred at the origen.

A point charge +Q is placed at the centre of an isolated conducting shell of radius R. Find the electrostatic potential energy stored outside the spherical shell if the shell also contains charge +Q distributed uniformly over it.

A metal sphere of radius R is charged to a pontital V . (a ) Find the electrostatic energy stored in the electric field within a concentric sphere of radius 2 R . (b )Show that the electrostatic field energy stored outside the sphere of radius 2R equals that stored within it .

A metal sphere of radius R is charged to a pontital V . (a ) Find the electrostatic energy stored in the electric field within a concentric sphere of radius 2 R . (b )Show that the electrostatic field energy stored outside the sphere of radius 2R equals that stored within it .

A point charge Q is placed at the origin of the coordinate system. What is the electrostatic energy within an annular spherical region, with centre at origin and inner and outer radii R and 2R respectively.

A metal sphere of radius R is charged to a pontital V . (a ) Find the electtrostatic energy stored in the electric field within a concentric sphere of radius 2 R . (b )Show that the electrostatic field energy stored outside the sphere of radius 2R equals that stored within it .

A point charge q is placed at the origin . How does the electric field due to the charge very with distance r from the origin ?