# Homework Help: Conductor in Capacitor Problem

1. Sep 8, 2009

### electricblue7

1. The problem statement, all variables and given/known data

An isolated capacitor with capacitance C = 1 µF has a charge Q = 22 µC on its plates.
Now a conductor is inserted into the capacitor. The thickness of the conductor is 1/3 the thickness of the capacitor and is centered in between the plates of the capacitor.

What is the capacitance of the capacitor with the conductor in place?

2. Relevant equations

Q = C / V

V = E d

3. The attempt at a solution

I know that since the capacitor is a conductor it makes the distance between the two plates smaller which means that the capacitance should therefore increase. I thought that since we now had two distances that were each 1/3 the original distance the capacitance would increase by a factor of 6 however this answer does not work. Can anyone help me please?!?

2. Sep 8, 2009

### rl.bhat

After introduction of conductor, each capacitor is three times the original capacitor. Now these two capacitors are in series. Then what will be the combined capacitor?