What should be the diameter of an aluminum wire for its resistance to be equal to that of a copper wire which diameter is 2.17 mm? The two wires are of the same length.ρ (Copper) = 1.68 x 10-8 Ωmρ (Aluminum) = 2.65 x 10-8 Ωm Note: A = πd2/4

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University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 70AP: A 10.00-meter long wire cable that is made of copper has a resistance of 0.051 ohms, (a) What is the...

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What should be the diameter of an aluminum wire for its resistance to be equal to that of a copper wire which diameter is 2.17 mm? The two wires are of the same length.

ρ (Copper) = 1.68 x 10^-8Ωm

ρ (Aluminum) = 2.65 x 10^-8Ωm

Note: A = πd²/4

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