1. The problem statement, all variables and given/known data Is the current through battery D greater than, less than, or equal to the current through battery C. Bulbs identical, and batteries ideal and identical. I took a picture of the circuit, hopefully you can see it - ignore the scribble! 2. Relevant equations Kirchhoff's current rule 3. The attempt at a solution Originally when I did the problem I though IB=IA, and got the paper back with it marked as wrong. I am reviewing for an exam now, and am hoping someone can let me know if I've resolved the problem. IB < IA. We know that the current that goes into the top node must be the same as the current through the bottom node. Why B is less than A is because B is in series with a bulb, which increases the resistance of that branch, and thus lowers the current.