A 50-m-long copper wire has a circular cross section with radius r = 2 cm. Given that

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A 50-m-long copper wire has a circular cross section with radius r = 2 cm. Given that the conductivity of copper is 5.8 × 107 (S/m), determine
(a) The resistance R of the wire and
(b) The power dissipated in the wire if the voltage across its length is 1.5 (mV).
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Fundamentals of Applied Electromagnetics

ISBN: 978-0132139311

6th edition

Authors: Fawwaz T. Ulaby, Eric Michielssen, Umberto Ravaioli

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