A circuit is constructed with five capacitors and a battery as shown. The values for the capacitors are: C1 = C5 = 4.1 μF, C2 = 3 μF, C3 = 6.8 μF, and C4 = 3.4 μF. The battery voltage is V = 12 V.
Picture is here: http://s3.amazonaws.com/answer-board-image/7cae5cec-ff95-4f38-b803-29ac0b6ddae6.png
I need to find the equivalent capacitance between points a and c.
I have the answer but I am a bit confused as to how it is arrived at. See below.
The Attempt at a Solution
I found the equivalent capacitance between a and b as c234=(c4)+(1/c23)
I see next that c234 is in series with c1 and c5. Why does the equation then become Cac=(1/((1/C1)+(1/C234)) and not (1/((1/C1)+(1/C5)+(1/C234))?