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A horizontal compass is held on the surface of the Earth directly over a buried powerline...

A horizontal compass is held on the surface of the Earth directly over a buried powerline with a current of 200 A heading due south. The compass is 5 m above the powerline. In what direction does the compass needle point at this location andwhat is the magnitude of the total magnetic field at this point? Assume the horizontal component of the Earth’s field at this point is 0.45 x 10‐4 T and is directed due north.

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