An electric current runs through a coil of wire as shown. A permanent magnet is located to the right of the coil. The magnet is free to rotate. What will happen to the magnet if its original orientation is as shown in the figure, with the current coming in on the front side of the solenoid, and then looping around the back?
1. rotate clockwise
2. remain still
3. rotate counterclockwise
4. Unable to determine
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Based on our data, we think this problem is relevant for Professor Hailu and Yacoby's class at HARVARD.