1. The problem statement, all variables and given/known data Find the equivalent resistance between A and B. All resistances shown are in ohm. 2. Relevant equations The formulas for parallel and series connections. 3. The attempt at a solution I have attempted to redraw the circuit and my redrawn diagram looks like this. I don't think it's correct,because I'm not getting the correct answer from this circuit diagram. The only troublesome part is the 5 ohm resistor. My idea is that no current passes through it. If I make that assumption,then the answer comes out beautifully. Do I sniff a Wheatstone bridge (and zero potential difference) somewhere?