Question

A small sphere of radius $r_{1}$and charge $q_{1}$is enclosed by a spherical shell of radius $r_{2}$and charge $q_{2}$If $q_{1}$is positive, then

• A. Charge will flow from the sphere to shell.
• B. Charge will flow from the shell to sphere
• C. Charge flow will depend on the magnitude $q_{2}$
• D. Charge flow will depend on the magnitude of charge $q_{1}$

Answer 1

Answer: (A)

Charge will flow from the sphere to shell.

Answer 2

: As the charge resides always on the outer surface of the shell, therefore, when the sphere and shell are connected by a wire, charge will flow essentially from the sphere to the shell, whatever be the magnitude and sign of charge $q_{2}$