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Jan2-13, 11:20 PM
HW Helper
BruceW's Avatar
P: 3,447
for example, on the lower part of your picture, the current is going into the page, so in the space just above the 'north' pole, the magnetic field lines from the magnet are going against the field lines created by the wire. And in the space just below the north pole, the field lines are almost matching up. Therefore, this magnet will be pushed downwards, so that the field lines will become less steeply curved.