An insulated extension cord is made of a 1.5 m long copper rod with a diameter of 2.3 mm. What is the resistance of the extension cord? If an aluminum wire of the same length will be used instead of copper, what should be the diameter of the aluminum wire to have the same resistance?

An insulated extension cord is made of a 1.5 m long copper rod with a diameter of 2.3 mm. What is the resistance of the extension cord? If an aluminum wire of the same length will be used instead of copper, what should be the diameter of the aluminum wire to have the same resistance?

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 57PQ

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