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Chapter 28, Problem 039 A horizontal power line carries a current of 6750 A from south to north. Earths magnetic field (60.1 μΤ) is directed toward the north and is inclined downward at 65.0° to the horizontal. Find the (a) magnitude and (b) direction of the magnetic force on 120 m of the line due to Earths field (a) Number Units the tolerance is +/-2%

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Answer #1

The magnitude is

F-ilB sin θ 6750 × 120 × 60.1 × 10-6 × Sin 65-44.12N

The direction is to the right.

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