1. The problem statement, all variables and given/known data 2. Relevant equations V=Ir 3. The attempt at a solution I solved part a ) already my question is about part b). Lets say I know that the 6 ohm resistor has current I3 going across is pointing to the left, and the 3 ohm resistor has current I1 also pointing to the left across it. I have to find it as if I am starting from point B and ending at point A (I think) . we are going against the current for the 6 ohm resistor so it would be + 6I3 from that and then we are following the direction of the current for the 3 ohm resistor so that would be - 3I1 across that. So the total voltage difference would be 6I3 - 3I1 . Am I doing this correctly?