Answer to Question #106554 in Electric Circuits for Muhammad saad bhatti

Question

10 C of charge are placed on a spherical conducting shell . A particle with charge -3 C is placed at center of cavity.The net charge on the outer surface of shell is:

Answer 1

+10 C of charge on a spherical conducting shell are placed only on its outer surface.

The field in the conductor is always zero. So,

the net charge on the outer surface of shell is +10-3=+7 C;

the net charge on the inner surface of shell is +3 C.