Another conductor B with charge q is inserted into the cavity keeping B insulated from A. Show that the total charge on the outside surface of A is `Q+q` [Fig (b)]

A hollow sphere A is taken with charge Q on it. Another conductor B with charge q is inserted into the cavity keeping B insulated from A . Show that the total charge on the outside the surface of A is (Q + q).

A conductor A with a cavity as shown in Fig. (a) is given a charge Q. Show that the entire charge must appear on the outer surface of the conductor.

A point charge +Q is placed in the vicinity of a conducting surface. Trace the field lines between the charge and the conducting surface.

A spherical conducting shell of inner radius r_1 and outer radius r_2 has a charge Q. A charge q is placed at the centre of the shell. What is the surface charge density on the inner and outer surfaces of the shell ?

Consider the charges q, q and -q placed at the vertices of an equilateral triangle as shown in Fig. What is the force on each charge ?

Two sphere M and N, having charge q_(1) and q_(2) are kept at some distance from each other.q amount of charge is taken from the sphere M and transferred ot the sphere N. What is the new charge of the two spheres so that the force acting between them becomes maximum?

+ q point charge is placed at the centre of a hemispherical surface. Amount of electrical flux crossing through th surface will be