10.1. Consider a pair of concentric spherical conductors. The inner sphere is of radius a and

contains a uniformly-distributed charge Q; the larger sphere is grounded and of inner radius c.

The space between the conductors is filled with two non-conducting, charge-free dielectrics, of

permittivity & (a

displacement field D in the space between the conductors. (b) Find the electric field E in the two

dielectric media. (c) Determine the potential difference Vo between the conductors. (d)

Determine the surface charge densities ps on the surfaces of the conductors.