1. The problem statement, all variables and given/known data C1 = 1μC ; C2 = 2μC ; C3 = 3μC ; C4 = 4μC V = 12.0V If both switches are closed, what is the charge on C1? 2. Relevant equations q = CV In parallel - V is constant across capacitors Cxy = Cx + Cy In series - q is constant across capacitors Cxy-1 = Cx-1 + Cy-1 3. The attempt at a solution I'm REALLY lost with this circuit. This is what I broke it down to: (C1 || C2) in series with (C3 || C4) And then I attempted to work backwards from there, but I can't seem to get the correct answer (which is 8.40μC). I added rough sketches of the circuit I was trying to break this down into... Not sure if I'm even on the right track!