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)`. Show that if `q_(1)` is positive, charge will necessilly flow from the sphere to the shell (when the two are connected by a wire) no matter what the charge `q_(2)` on the shell is [Fig]

Answer 1

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 fromt the sphere to the shell, whatever be the magnitude and sign of charge `q_(2)`.