Answered: The diameter of a specific copper wire…

The diameter of a specific copper wire is 8.312 mm, and has a resistivity of 1.72 × 10-8 Ω⋅m Find the resistance of a 0.85 km length of such wire used for power transmission in Ω.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter29: Direct Current (dc) Circuits

Section: Chapter Questions

Problem 19PQ

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Concept explainers

Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.

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The diameter of a specific copper wire is 8.312 mm, and has a resistivity of 1.72 × 10^-8 Ω⋅m

Find the resistance of a 0.85 km length of such wire used for power transmission in Ω.

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