What diameter must a copper wire have if its resistance is to be the same as that of an equal length of aluminum wire with diameter 3.1 mm? Take the resistivity of copper and aluminum to be 1.72 x 10-8 Ωm and 2.75 x 10-8 Ωm respectively.
What diameter must a copper wire have if its resistance is to be the same as that of an equal length of aluminum wire with diameter 3.1 mm? Take the resistivity of copper and aluminum to be 1.72 x 10-8 Ωm and 2.75 x 10-8 Ωm respectively.
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter28: Current And Resistance
Section: Chapter Questions
Problem 67PQ
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What diameter must a copper wire have if its resistance is to be the same as that of an equal length of aluminum wire with diameter 3.1 mm? Take the resistivity of copper and aluminum to be 1.72 x 10-8 Ωm and 2.75 x 10-8 Ωm respectively.
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