Solve the all parts of given question:
Question: A conductor with an inner cavity, like that shown in Fig.22.23c from the textbook, carries a total charge of +4.70 nC. The charge within the cavity, insulated from the conductor, is -7.40 nC.
Part A: How much charge is on the inner surface of the conductor?
Part B: How much charge is on the outer surface of the conductor?
I need help to find how much charge is on the inner surface of the conductor.