2.35 A small sphere of radius r1 and charge q1 is enclosed by a spherical shell of radius r2 and charge q2. Show that if q1 is positive, charge will necessarily flow from the sphere to the shell (when the two are connected by a wire) no matter what the charge q2 on the shell is.
The potential difference between the inner sphere and shell;
So, the potential difference is independent of . And hence whenever q1 is positive, the charge will flow from sphere to the shell