# Capacitor charge flow problem

Discussion in 'General Electronics Chat' started by pk2010, May 26, 2015.

1. ### pk2010 Thread Starter New Member

May 26, 2015
2
0

I calculated all the potentials before the shorting and all the potentials after the shorting.But how do i find how much charge transferred through the shorting wire?

PS: This is not homework.I am practising some problems for a competitive exam.I study on my own so I have no teacher to ask.Can someone help me?

Last edited: May 26, 2015
2. ### wayneh Expert

Sep 9, 2010
13,612
4,412
Q=VC
C is assumed constant for a capacitor. You have V. Any change in total charge on the caps had to come from (or go into charging) the batteries.

3. ### pk2010 Thread Starter New Member

May 26, 2015
2
0
but there are so many capacitors and batteries..how do i estimate how much charge flew from that particular wire?

4. ### crutschow Expert

Mar 14, 2008
16,524
4,453
You look at the charge into or out of each capacitor and add them together (making note of the charge sign) to get the net charge through the wire.

5. ### wayneh Expert

Sep 9, 2010
13,612
4,412
I'll admit I haven't worked out the answer, but I believe the answer can be calculated analytically and will not require an estimation. It may require an iterative convergence, so maybe an initial estimate would help with that.