# Capacitance of convoluted circuit

What is the capacitance of this circuit if S is closed? AFAICS, Rules for capacitors in series or parallel can only help to simplify the problem down to

     |--||--|
A -- |      |------|--- B
|--||--|--||--|


, but this weird parallelism with nothing for the third capacitor is what confuses me.

• C5 and C4 in parallel, and are in series with C1 and C3. (C2 and C6 are shorted, so do nothing)
– Icy
Nov 6 '15 at 10:10
• As @Icy says/implies, C2 and C6 can have no current through them because they are shorted out. Throw 'em away and what are you left with. Nov 6 '15 at 10:13
• @Icy "(C2 and C6 are shorted, so do nothing)" That's what I anticipated! Can you make that an answer? Nov 6 '15 at 10:13