(adsbygoogle = window.adsbygoogle || []).push({}); Circuits problem :( Need help by 10:00 tonight (EST).

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

In the circuit shown below, R1=10 ohms, R2=45 ohms, and R3=14 ohms. The power supply delivers a voltage of 25.0 V. a) What is the current through R3? b) What is the voltage across R2?

http://img91.imageshack.us/img91/6443/dia2pj3.png [Broken]

Possible choices for part a:

0.92 A, 1.21 A, 1.79 A, 1.84 A, 2.50 A

Possible choices for part b:

25.0 V, 12.1 V, 12.9 V, 15.0 V, 0 V.

2. Relevant equations

V=IR

3. The attempt at a solution

To be honest, I have no idea how to do this problem. I don't know where to start. Do I have to find the voltage drop first? I'm just lost, heh.

Any help is appreciated.

Bensky

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# Homework Help: Circuits problem Need help by 10:00 tonight (EST).

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