Astraight wire is aligned east-west in a region where earth’s magnetic field has magnitude 0.0780 mt and direction 67.1° below the horizontal, with the horizontal component directed due north. the wire carries a current i toward the west. the magnetic force on the wire per unit length of wire has magnitude 0.0300 n/m.
(a) what is the direction of the magnetic force on the wire?
(b) what is the current i?
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