1. The problem statement, all variables and given/known data Find the voltage across v1 in the circuit below: http://puu.sh/1eD2R [Broken] 2. Relevant equations 3. 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): Spoiler http://puu.sh/1eD7L [Broken] 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!