1. The problem statement, all variables and given/known data Examine the figure shown. Note that C3 = 10.5 uF, and C1 = C2 = 2C3. Also the battery voltage is Vb = 39.0 volts. 2. Relevant equations What is the equivalent capacitance for this arrangement? How much charge is stored on C1? 3. The attempt at a solution C2 and C3 are in parallel, so I used C'=C2+C3 C' is in series with C1, so the total capacitance, C'' is: ((C1)(C'))/(C1+C') which is equal to: ((C1)(C2+C3))/(C1+C2+C3) pluging in values, I get an answer of 12.6 uF. I am using an online homework program and am told that this is incorrect. What am I doing wrong? For the second question, shouldn't I multiply my answer for the first part by the volts value given? Thank you for you help.