1. The problem statement, all variables and given/known data A capacitor network is shown below. http://img99.imageshack.us/img99/9967/79727282.gif [Broken] What is the equivalent capacitance between points y and z of the entire capacitor network? 2. Relevant equations In parallel: C = c1 + c2 + ... In series: 1/C = 1/c1 + 1/c2 + ... 3. The attempt at a solution I'm not sure exactly which capacitors are in series and which are parallel. But I was thinking that the capacitors in series are the ones that form an isolated system. This seems to be all the capacitors with 15 mF, which is C2 = 15/6. The remaining capacitor C1 = 10 mF seems to be parallel with C2 so C = C2 + C1 = 15/6 + 10 = 12.5 mF. But this is the wrong answer. I'm a bit stumped. I'd appreciate any help.