(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

1) Determine the current in each resistor and charge on the capacitor after a long time immediately after the switch is closed

2) Determine the current in each resistor and charge on the capacitor after a long time

After the switch has been closed for a long time it is re-opened.

3) Determine the current in each resistor and the charge on the capacitor immediately after the switch has been re-opened.

4) Determine the time constant of the capacitor discharge.

2. Relevant equations

V = I Req

Q = CV

3. The attempt at a solution

I got #1 and got I6 = 1A, I8 = 1.5A, and I12 = .5A

I'm not sure what to do about #2 though. What is the voltage across the capacitor? I thought it would be 6V, because that is the voltage across the parallel series. However, there is a voltage drop after the 1A current runs across the 6ohm resistor so the V across the capacitor is 0.

For #3 and 4, does the 8ohm resistor come into play or no?

Thanks for the help guys.

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# Charge on capacitor (RC circuit)

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