1. The problem statement, all variables and given/known data Two conducting spheres of radii R1 and R2 are kept widely separated from each other. What are their individual capacitance? If the spheres are connected by a metal wire, what will be the capacitance of the combination? Think in terms of series-parallel connections. 2. Relevant equations 3. The attempt at a solution Individual capacitance are simply [itex]4\pi\epsilon_oR_1[/itex] and [itex]4\pi\epsilon_oR_2[/itex]. I have no idea on what happens when they are connected. I can't understand the type of combination. Will it be series or parallel? Any help is appreciated.