I've been having trouble with the solution my book (and the solution manual) gives for a problem. Basically, there are two inductors (wire coils): one is on the left, hooked to a battery and a switch. Then there's one to the right of it, hooked to only a resistor. The left switch is closed for a while, and then opened. The problem is to determine the direction of the current in resistor "ab" when the switch is opened (after being closed for a while). That's it - the book and solution manual say the current goes from A to B (left to right) through the resistor, but it seems to me like it's the other way around. I include a crudely drawn figure in Paint for reference: http://www.malcolm-s.net/images/phys1.gif This is a pretty simple problem, I'm just not understanding the answer given. Thanks for any help.