1. The problem statement, all variables and given/known data Consider a solid conducting sphere with an inner radius R1 surrounded by a concentric thick conducting spherical shell which has an inner radius R2 and outer radius R3. There is a charge Q on the sphere and no net charge on the shell. For all parts of this problem, we adopt the standard convention of setting the electric potential at infinity to zero. Find the potential at Point A. Find the Potential at Point O. I have posted the problem and the choices. it is questions 10 and 11. 2. Relevant equations V= kQ/r 3. The attempt at a solution I think that the potential at point A is: 3. Va= KQ/a For Point O: either 0 or infinity Can somebody please tell me if I am correct. Thanks in advance.