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?

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Physics by Example

ISBN: 978-0521445146

1st edition

Authors: W. G. Rees

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Question Posted: Mar 01, 2017 12:45 PM

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A surveyor 100 m from a long straight 200-kV DC power line suspects that its magnetic field

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a Using the equation we can calculate the current required t...View the full answer

Physics by Example

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