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October 24, 2014

Homework Help: Current/Magnetic force

Posted by Matt on Thursday, April 5, 2012 at 1:55pm.

A high voltage power line carries a current of 110 A at a location where the Earth's magnetic fields has a magnitude of 5.9 x 10^-4 T and points north at an angle of72 degrees below the horizontal (toward the earth surface). Find the direction and magnitude of the magnetic force exerted on a 250m length of wire if the wire flows
a) horizontally toward the east
b) horizontally toward the south

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