1. The problem statement, all variables and given/known data The problem is from an old GRE that I can't wrap my head around. http://grephysics.net/ans/8677/94 2. Relevant equations V = -L(dI/dt) I = V/R 3. The attempt at a solution Okay, so I have the solution, I just don't understand their reasoning. A change in current through an inductor makes it produce a voltage. I thought it was in the opposite direction of where current was coming from, though, meaning that it would make the voltage across A smaller at first and eventually let up and let the voltage go up to its asymptotic value. Then when you closed the switch, I understand that the only way for the built up charge to dissipate is to make it go in a loop, through A, L, R2, and the Diode. I don't understand why it doesn't all just go directly from L to Ground?