Suppose that in the figure above, C1 = C2 = C3 = 16.4 ?F, and C4 = 39.2 ?F. The

Question

Suppose that in the figure above, C1 = C2 = C3 = 16.4 ?F, and C4 = 39.2 ?F.
The circuit is assembled with the capacitors uncharged, after which a voltage is applied across points a and b such that the charge on C2 is Q2 = 13.2 ?C. The voltage source is then disconnected.

What is the charge on C1?

What is the voltage on C1?

What is the voltage on C2?

What is the voltage on C3?

What is the charge on C3?

What is the charge on C4?

What is the voltage on C4?

What is the voltage Vab across the entire combination?

Explanation / Answer

1.sicne c1 is in series with c2 ... q1=q2=13.2 microC

2.voltage on c1= q1/c1=13.2/16.4=0.804V

3.voltage on c2= q3/c2=13.2/16.4=0.804 V

4. voltage on c3=voltage on c1+voltage on c2=1.608 V

5.charge on c3=1.608x16.4=26.37 microC

6.q3=q3+q1=26.37+13.2=39.57 microC

7.voltage onn c4=39.57/39.2=1.009 V

8.vab=1.009+1.608 =2.617V

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