1. The problem statement, all variables and given/known data Find the potential outside a charged metal sphere (charge Q, radius R) placed in an otherwise uniform electric field E_0. Explain clearly where you are setting the zero of potential. 2. Relevant equations 3. The attempt at a solution If I set the 0 of the potential at the surface of the sphere (which I can do because it is at an equipotential because it is a conductor), then I don't see how the analysis is different than Example 3.8?