1. In the figure below a spherical conducting spherical shell with inner radius 'a' and outer radius 'b' is concentric with a larger conducting spherical shell of inner radius'c and outer radius 'd. The inner shell has a net charge of -3q and the outer shell has a net charge of +4q. (20 pts) a) Use Gauss's Law to calculate the surface charge density on the inner and outer surface of each shell. b) Use the super position principle to find the electric potential for: 1. r d