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Bensky
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Circuits problem :( Need help by 10:00 tonight (EST).
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.
V=IR
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
Homework Statement
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.
Homework Equations
V=IR
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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