1. The problem statement, all variables and given/known data http://screencast.com/t/9KET4sNSAQWj If the picture isn't showing up, the order of the capacitors is 1 -> 2 & 4 (parallel) -> 3, with a battery in the circuit. There's a dielectric in C2 with k = 2.71. There's a battery with v = 5.33v in the picture. Capacitors: C1 = 11.2 μF C2 = 4.04 μF C3 = 13.1 μF C4 = 3.32 μF The question wants to know the charge on the capacitor with the dielectric (C2). It also asks how much work is needed to remove the dielectric from the capacitor after the battery is removed. 2. Relevant equations C = Q/V capacitor circuit relationships U = 1/2 Q2 / C W = -U 3. The attempt at a solution I got a Ceq for 2 and 4, and that gave me a charge, Q, for the parallel part of the circuit, but I don't know how to separate it from there. As for the work, I'm pretty sure I can't do that part until I finish this first part. But even then I'm not entirely sure what to do.