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~christina~

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**[SOLVED] complicated looking circuit**

## Homework Statement

Consider circuit the below.

(a) How much energy is delivered to the 10 Ω resistor from the time at which S2 is closed (Note: all other switches are open) to t = 30 µs?

(b) How much energy is stored in the 2 µF capacitor if S1 and S3 are also closed and the circuit has reached steady-state? Express your results in electron volts.

(c) What is the current in each branch of the circuit when S1, S2, and S3 are closed and the circuit has reached steady-state?

(d) What is the reading on the voltmeter connected across the 6.0 Ω resistor when all of the switches are closed and the circuit has reached steady-state?

http://img114.imageshack.us/img114/2714/picture3ii5.th.jpg [Broken]

## Homework Equations

## The Attempt at a Solution

**(a) How much energy is delivered to the 10 Ω resistor from the time at which S_2 is closed (Note: all other switches are open) to t = 30 µs?**

hm...what equation would I use for this? (I can't seem to find a section discussing the energy "delivered" to a resistor within a time period, unless I calculate this some other way)

energy would be in Joules as well, right?

I was thinking that it would be: 0.5CV^2 but that is the energy that is stored in a capacitor and not resistor.

**(b) How much energy is stored in the 2 µF capacitor if S1 and S3 are also closed and the circuit has reached steady-state? Express your results in electron volts.**

I can't figure out which direction is the current going in the first place.

And I think I need to write the sum equation for current, and sum equation for voltage since that's what my prof said, but I'm not sure how to do this for a circuit complicated looking like this one.

Yes, I really think I need help on this problem.

Please help.

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