1. The problem statement, all variables and given/known data 2. Relevant equations Node Voltage Method V=IR 3. The attempt at a solution KCL at Node 1: KCL at Node 2: i is the current moving towards "a" I've simplified the two equations down but the problem I run into is that normally I'm able to write a third equation to define i0. In this case there is no resistance. i0=v1/R but since R=0 this would be undefined. Where do I move from here?