Question: A compass needle points 230 E of N outdoors. However, when it is placed 12.0cm to the east of a vertical wire inside a building,

A compass needle points 230 E of N outdoors. However, when it is placed 12.0cm to the east of a vertical wire inside a building, it points 550 E of N. what are the magnitude and direction of the current in the wire? The Earth’s field there is 0.50 X 10-4 T and is horizontal.

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