1. The problem statement, all variables and given/known data Given the this circuit calculate the voltage through the 3amp source? attached is a jpeg of the circuit. I wasn't able to get a good score on this one question quiz since this boggled me. Is true if I put current source that it will dictate the current of the battery? 2. Relevant equations Hi, I am having some trouble analyzing this circuit. Kirshhoff's Voltage Law. 3. The attempt at a solution There is only one mesh for this circuit(square box). I have three components a 12 volt battery, a resistor and a 3amp current source. I want to find the voltage of the 3 amp current source. I found the equation for the loop (clockwise) to be 0 = 12 -i2 - (voltage of the 3 amp current source). How can I solve this with 2 unknowns. My professor said that the key to solving this was ohms law, the i through the 2 ohm resistor is 3 amps and thus the voltage for the 2ohm resistor is 6V and thus we can see that i2 = 6V so 0 = 12 -6 -(Voltage of the 3 amp current source) would then yield 18 as the voltage through the 3amp source. I know however from very basic circuits that the voltage source would produce a current so why can he just say that the 3 amp source is equal to the current produced by the battery?