1. The problem statement, all variables and given/known data Consider four concentric spherical metal shells of radii r, 2r, 3r, and 4r. The middle two shells are connected by wire, as shown. What is the total capacitance of the system? In your solution, clearly explain your method. 2. Relevant equations u= 1/2cv^2 3. The attempt at a solution So my teacher told us to assume we can hook it up to a battery(voltage) and that the two inner shells have the same charge and to evaluate the potential inner to outer, but I have no idea how to do this.