If the gauge number of a wire is increased by 6, the diameter is halved; if a

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If the gauge number of a wire is increased by 6, the diameter is halved; if a gauge number is increased by 1, the diameter decreases by the factor 21/6 (see the table in Problem 6). Knowing this, and knowing that 1000ft of 10-gauge copper wire has a resistance of approximately 1.00Ω, estimates the resistance of 25 ft of 22-gauge copper wire.

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Fundamentals of Physics

ISBN: 978-0471758013

8th Extended edition

Authors: Jearl Walker, Halliday Resnick

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