- #1
planauts
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Homework Statement
Find the voltage across v1 in the circuit below:
http://puu.sh/1eD2R
Homework Equations
The Attempt at a Solution
I tried using KVL across loop 1 (from left) and then:
LOOP2: v1, 2ohms,1ohm,4V
LOOP3: also: 5V, 2ohms, 1ohm, 4V
I seem to be getting 3V as the voltage across v1. I don't think I am right because it's not one of the options. The options are:
a) 9 V
b) -9 V
c) -5 V
d) 4 V
My rough work, (if you can decipher my penmanship - near the end, I skipped a steps and just did it in my head/calculator's memory):
http://puu.sh/1eD7L
Also, is it possible to use the loop with the 3A current source to do KVL? I thought it wasn't allowed because I don't know the voltage drop across the current source.
Thanks!
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