A surveyor 100 m from a long straight 200-kV DC power line suspects that its magnetic field
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A surveyor 100 m from a long straight 200-kV DC power line suspects that its magnetic field may equal that of the Earth and affect compass readings.
(a) Calculate the current in the wire needed to create a 5.00 × 10-5 T field at this distance.
(b) What is unreasonable about this result?
(c) Which assumption or premise is responsible?
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a Using the equation we can calculate the current required t...View the full answer
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