A charge Q is kept in the inner cavity and a charge 2 Q is given to the inner shel. A charge 3 Q is given to the outermost shell, as shown in Fig. 1 (a).22 Find the charges at the surfaces A,B and C.

As shown in Figure, charge Q is kept in the inner cavity and a charge of 2Q and 3Q are imparted to the inner and outermost shells. (a) Find charge at each of the surface . (b) Find E in the first annular region and outside.

Two concentric conducting shells A and B are of radii R and 2R . A charge + q is placed at the centre of the shells. Shell B is earthed and a charge q is given to shell A. Find the charge on outer surface of A and B.

Two concentric conducting shells A and B are of radii R and 2R . A charge + q is placed at the centre of the shells. Shell B is earthed and a charge q is given to shell A. Find the charge on outer surface of A and B.

In (Fig. 3.73), if the inner shell has charge +q_0 and the outer shell is earthed, then . i. determine the charge on the outer shell, and ii. find the potential of the inner shell.

In (Fig. 3.73), if the inner shell has charge +q_0 and the outer shell is earthed, then . i. determine the charge on the outer shell, and ii. find the potential of the inner shell.

A spherical conducting shell of inner radius r_1 and outer radius r_2 has a charge Q as shown in the figure. A charge q is placed at the centre of the shell. What is the surface charge density of the inner and outer sufaces of the shell?

Two concentric hollow spheres are arranged as shown in the figure. If a charge +Q is given to the outer sphere, find charge induced on the inner sphere.

Three concentric conducting spherical shells carry charges as : +4Q on the inner shell, -2Q on the middle shell and -5Q on the outer shell. The charge on the inner surface of the outer shell is