A spherical shell having charge +Q (uniformly distributed) and a point charge `+ q_(0)` are placed as shown. Find the force between shell and the point charge `(r gt gt R)`.

A spherical shell of radius R has a uniformly distributed charge ,then electric field varies as

A sperical shell is uniformly charged by a charge q. A point charge q_(0) is at its centre , then

Inside a charged thin conducting shell of radius R, a point charge +Q is placed as shown in figure potential of shell may be

Three concentric spherical shells A, B and C having uniformly distributed total charges +Q, -2Q and +Q respectively are placed as shown. The potential at the centre will be -

A thin metallic spherical shell carries a charge Q on it. A point charge Q_(1) is placed at the centre of the shell and another charge q is placed outside as shown in figure ahead. All the charges are positive . Discuss the various forces acting on Q_(1) .

A thin spherical shell radius of R has a charge Q uniformly distributed on it. At the centre of the shell, a negative point charge -q is placed. If the shell is cut into two identical hemispheres, still equilibrium is maintained. Then find the relation between Q and q?

A thin metallic spherical shell contains a charge Q on it. A point charge q is placed at the center of the shell and another charge q_1 is placed outside it as shown in the figure. All the three charges are positive. Find the force on the charge a. at centre due to all charges. b. at center due to shell.

A thin. Metallic spherical shell contains s charge Q on it. A point charge q is placed at the centre of the shell and another charge q_1 is placed outside it as shown in figure (30-Q1). All the three charges are positive. The force on the charge at the centre is

A spherical shell of radius R is given charge 3q on its surface and a point charge q is placed at distance R//2 from its centre C . Also there is a charge 2q placed outside the shell at a distance of 2R as shown. Then