A conducting sphere of radius R and a concentric thick spherical shell of inner radius 2R and outer radius 3R is shown in figure. A charge `+10Q` is given to the shell and inner sphere is earthed. Then charge on inner sphere is

A solid conducting sphere of radius a having a charge q is surrounded by a concentric conducting spherical shell of inner radius 2a and outer radius 3a as shown in figure. Find the amount of heat porduced when switch is closed (k=1/(4piepsilon_0))

What is the volume of the material in a spherical shell with inner radius ‘r' and outer radius 'R' ?

A solid conducting sphere of radius R is surrounded by a concentric metallic shell of inner radius 2R and outer radius 3R. The shell is earthed. The inner sphere is connected to a switch S by a thin conducting wire through a small hole in the shell. By closing the switch S, the inner sphere is connected to a distant conducting sphere of radius R having charge Q. Find the charge that flows to earth through wire AB.

A solid conducting sphere of radius a has a net positive charge 2Q . A conducting spherical shell of inner radius b and outer radius c is concentric with the solid sphere and has a net charge -Q . The surface charge density on the inner and outer surfaces of the spherical shell will be

A metallic spherical shell has an inner radius R_(1) and outer radius R_(2) . A charge is placed at the centre of the spherical cavity. The surface charge density on the inner surface is

A point charge +q is placed at the centre of a conducting spherical shell of inner radius a and outer radius b. Find the charge appearing on the inner and outer surface of the shell.

A small conducting spherical shell with inner radius a and outer radius b is concentric with a larger conducting spherical shell with inner radius c and outer radius d ( as shown in Fig . 2.121). The inner shell has a total charge + 2 q , and the outer shell has a total charge + 4 q . Calculate the electric field in terms of q and the distance r from the common center of the two shells for r lt a

A small conducting spherical shell with inner radius a and outer radius b is concentric with a larger conducting spherical shell with inner radius c and outer radius d ( as shown in Fig . 2.121). The inner shell has a total charge + 2 q , and the outer shell has a total charge + 4 q . Calculate the electric field in terms of q and the distance r from the common center of the two shells for a lt r lt b