1. The problem statement, all variables and given/known data Okay. I thought I knew how to do these type of questions, but here goes. The node at a is attached to the positive terminal of a voltage source and c is attached to the negative. I'm completely bemused as to how to reduce this circuit into a single-resistor equivalent. I thought that resistors ab and ae could be reduced into a series resistor, but my study partner says they are in parallel because the current does not go through them one after another but divides at a. However, they can't be reduced to parallel resistors because of the set-up of the junctions (or can they?) I'm actually stumped by how to approach this problem. 2. Relevant equations 1/RP=1/R1+1/R2... RS=R1+R2... R|| = R1R2/R1+R2 3. The attempt at a solution The circuit has already been reduced from a more complex one and I've tried searching through the questions posted in homework for inspiration. Any help would be much appreciated!