17.2 A given copper wire has a resistance of 5.18 Ω at 20.0°C while a tungsten wire of the same diameter has a resistance of 4.77 Ω at 20.0°C. At what temperature will the two wires have the same resistance?

17.2 A given copper wire has a resistance of 5.18 Ω at 20.0°C while a tungsten wire of the same diameter has a resistance of 4.77 Ω at 20.0°C. At what temperature will the two wires have the same resistance?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter21: Current And Direct Current Circuits

Section: Chapter Questions

Problem 61P

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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.

Question

17.2

A given copper wire has a resistance of 5.18 Ω at 20.0°C while a tungsten wire of the same diameter has a resistance of 4.77 Ω at 20.0°C. At what temperature will the two wires have the same resistance?

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