1. The problem statement, all variables and given/known data Draw a sketch and show/explain how the induced secondary voltage and current "moves" when the primary current "breaks" the instant the switch N is opened. See the attached image below (I apologize for my awful paint job...). 2. Relevant equations 3. The attempt at a solution Well. this isn't much of a solution, but I've found out the following about the magnetic circuit, if I can call it that, while the switch is closed: How can I explore what happens to the circuit when the switch is opened? The lectures and lecture notes we have on this subject says nothing about this particular problem - or at least I don't understand it. Any input will be greatly appreciated, thanks.