1. The problem statement, all variables and given/known data Find the detector current i_d in the unbalanced bridge in the figure if the voltage drop across the detector is negligible. The source voltage v_g is 180V. 2. Relevant equations 3. The attempt at a solution I am not sure what to do, or even how to find the equivalent resistance. I have learned the delta-y transformation, but I don't suspect that will help me here, since the detector has negligible resistance, right? (and if it doesn't have negligible resistance, than the current is negligible, if i am understanding V=IR correctly) Someone to point me in the right direction would be greatly appreciated.