Calculate the resistance of an annealed copper wire of 710 m long and a diameter of 128 mils at 20 0 C. What will be the resistance of this wire if it is drawn down to one-half of the cross-section without change in volume and material? Please answer with a complete solution.

Calculate the resistance of an annealed copper wire of 710 m long and a diameter of 128 mils at 20 0 C. What will be the resistance of this wire if it is drawn down to one-half of the cross-section without change in volume and material? Please answer with a complete solution.

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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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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Calculate the resistance of an annealed copper wire of 710 m long and a diameter of 128 mils at 20 ⁰C. What will be the resistance of this wire if it is drawn down to one-half of the cross-section without change in volume and material?

Please answer with a complete solution.

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