A current is induced in a loop by something happening with current in a long straight wire near the loop. What could be happening? (There are two possibilities. Neither the wire nor the loop is moving.)
The Attempt at a Solution
I'm pretty sure I know one of the possibilities. I said that one possibility is that the current in the straight wire is changing. This changing current will create a magnetic field. This created magnetic field will then induce a current in the loop. I cannot think of the other possibility if the wire and loop are not moving. Any help would be appreciated.