[" A sphere of radius "2R" has a uniform charge "],[" density "8." The difference in the electric potential "],[" at "r=R" and "r=0" from the centre is: "]

A sphere of radius 2R has a uniform charge density p. The difference in the electric potential at r = R and r = 0 from the centre is:

There is a hemisphere of radius R having a uniform volume charge density rho . Find the electric potential and field at the centre

An insulated sphere of radius r haas a uniform volume charge density lambda . The electric field at a point A , which is at distance r from its centre is given by (R gt r)

A quarter ring of radius R is having uniform charge density lambda . Find the electric field and potential at the centre of the ring.

Charge Q is distributed on two concentric spheres of radius r and R resp. if charge density of both spheres is same then electric potential at centre will be

A hollow conducting sphere of radius R has a charge +Q on its surface. What is the electric potential within the sphere at a distance r = R//3 from its centre.

A sphere of charge of radius R has uniform volume charge density. The electric field due to the sphere of charge at a point