2.30 A spherical capacitor has an inner sphere of radius 12 cm and an outer sphere of radius 13 cm. The outer sphere is earthed and the inner sphere is given a charge of 2.5 . The space between the concentric spheres is filled with a liquid of dielectric constant 32.
(b) what is the potential of the inner sphere?
Potential of the inner sphere is given by
Hence the potential of the inner sphere is .