Physics
Electricity and Magnetism
A silver wire has resistivity p = 1.62 x 10-8

A silver wire has resistivity p = 1.62 x 10-8 m and a cross-sectional area

Question:

A silver wire has resistivity p = 1.62 x 10-8 Ω ∙ m and a cross-sectional area of 5.00 mm2. The current in the wire is uniform and changing at the rate of 2000 A/s when the current is 100 A.

(a) What is the magnitude of the (uniform) electric field in the wire when the current in the wire is 100 A?

(b) What is the displacement current in the wire at that time?

(c) What is the ratio of the magnitude of the magnetic field due to the displacement current to that due to the current at a distance r from the wire?

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a Using Eq 2710 we find EpJ A b The displacement ...View the full answer

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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 25, 2011 05:18 AM

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