What is Rf --> Op_Amp 1. Consider the amplifier circuit shown. What value of Rf will yield vout = 2V when Is = 10 mA and Ry = 2Rx = 500Ω 2. The way I did this was by employing KCL: (Is that applicable?) 3. The attempt at a solution Rx(Is) + Rf(Is) = Vout I'm actually not quite sure how to do this one. It's left me in a bit of a pickle.