Two cities separated by 10,000 ft is connected by telephone wires whose thermal coefficient of resistance at 25°C is 0.003/CO . If the resistance of the wire at 57°C is 602 Q, what would be its resistance at 25°C?

Two cities separated by 10,000 ft is connected by telephone wires whose thermal coefficient of resistance at 25°C is 0.003/CO . If the resistance of the wire at 57°C is 602 Q, what would be its resistance at 25°C?

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 65PQ

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Concept explainers

Temperature Variance of Resistance

Electrical resistance or simply resistance is the property of a material that opposes the free flow of electrons through it. The total amount of resistance to the flow of charges (or current) is affected by many factors like the length of the conducting material, its cross-sectional area, resistivity, and temperature.

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Two cities separated by 10,000 ft is connected
by telephone wires whose thermal coefficient
of resistance at 25°C is 0.003/CO . If the
resistance of the wire at 57°C is 602 Q, what
would be its resistance at 25°C?

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