Find the equivalent resistance between node A and B, knowing that Rab = Vab/Iab
KCL and KVL, I know.
The Attempt at a Solution
There is nothing in series or parallel here, so what I did is set up KCL equations and KVL loop equations (top and bottom loops), so 6 equations with 6 unknowns and I can find Iab. I don't know how to find Vab though...