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 2.77 mm? Take the resistivity of copper and aluminum to be 1.72 x 10-8 Ωm and 2.75 x 10-8 Ωm respectivel

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 2.77 mm? Take the resistivity of copper and aluminum to be 1.72 x 10-8 Ωm and 2.75 x 10-8 Ωm respectivel

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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