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A circular copper wire has a cross-sectional area of 2mm2; its resistance is 0.12 Ω at 50°C.Find its resistance at 20°C using:a.Inferred zero resistance formulab.Temperature coefficient formula

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 67P: A 12-guage gold wire has a length of 1 meter. (a) What would be the length of a silver 12-gauge wire...

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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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A circular copper wire has a cross-sectional area of 2mm2; its resistance is 0.12 Ω at 50°C.Find its resistance at 20°C using:a.Inferred zero resistance formulab.Temperature coefficient formula

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