R + 9 + Q Two isolated, concentric, spherical, conducting shells of radius r and R carry positive total net charges q and Q, respectively. The shells are very thin compared to the radii. (a) What is the potential at the surface of the large sphere, assuming V = 0 at infinity? (b) What is the potential of the small sphere? (c) Calculate the potential difference between the spheres, and indicate which one is at a higher potential. (d) Now the spheres are connected with a fine conducting wire so that charge could redistribute between them. Will the charge move, and, if so, which direction will it flow? What will be the final charge on each sphere