A surveyor is using a magnetic compass 6.1 m below a power line in which there is

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A surveyor is using a magnetic compass 6.1 m below a power line in which there is a steady current of 100 A.

(a) What is the magnetic field at the site of the compass due to the power line?

(b) Will this field interfere seriously with the compass reading? The horizontal component of Earth's magnetic field at the site is 20μT.

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Fundamentals of Physics

ISBN: 978-0471758013

8th Extended edition

Authors: Jearl Walker, Halliday Resnick

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Question Posted: Jan 22, 2011 04:42 AM

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A surveyor is using a magnetic compass 6.1 m below a power line in which there is

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a The magnitude of the magnetic field due to the current i...View the full answer

Fundamentals of Physics

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