1. The problem statement, all variables and given/known data Find a) the potential difference between points a and b b) the current of the 20 ohm resistor I drew the diagram in MS Paint. Should be good enough. http://img188.imageshack.us/img188/6515/circuitf.jpg [Broken] 2. The attempt at a solution I just don't know where to start, since I'm not sure how the current will behave. Will it leave the battery, hit the "intersection" near b, and then split off in all 3 directions? Or will it simply go one way towards b then loop around and go back up to a then take the top wire through the 10 ohm resistor and back in the battery? I don't know, and I'm not sure how I'm supposed to find out.