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BruceW
#18
Jan2-13, 11:16 PM
HW Helper
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P: 3,448
The current in the wire creates a magnetic field. This magnetic field causes a force on the magnet.

If you imagine the magnetic field lines from the wire and the magnetic field lines from the magnet, you can see what direction is the force on the wire and on the magnet. (a general quick and easy rule of thumb is that the magnetic field lines like to be as uniform as possible).