Question: A conductor A with a cavity as shown in Figure (a) is given a charge Q. Show that the entire charge must appear on

A conductor A with a cavity as shown in Figure (a) is

A conductor A with a cavity as shown in Figure (a) is given a charge Q. Show that the entire charge must appear on the outer surface of the conductor. (b) 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 [Figure (b)]. (c) A sensitive instrument is to be shielded from the strong electrostatic fields in its environment. Suggest a possible way. Q+q (b)

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