A copper wire has a resistance of 15.0 Ω at a temperature of 14°C. After a current passes through the windings, the resistance rose to 22.5 Ω. To what temperature was the wire heated? Table 3-3Temperature Coefficients of Resistance of Some Materials at 20°CMateriala (x10-3/C°)Materiala (x10-3/C°)ConductorsNichrome0.4Aluminum33.9Platinum3.9Brass2.0Silver3.8Constantan0.01Tungsten4.53.93SemiconductorsCopperGoldCarbon (graphite)3.4-0.5Iron5.0Germanium-50Lead4.3Silicon-70

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College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A copper wire has a resistance of 15.0 Ω at a temperature of 14°C. After a current passes through the windings, the resistance rose to 22.5 Ω. To what temperature was the wire heated?

Table 3-3
Temperature Coefficients of Resistance of Some Materials at 20°C
Material
a (x10-3/C°)
Material
a (x10-3/C°)
Conductors
Nichrome
0.4
Aluminum
33.9
Platinum
3.9
Brass
2.0
Silver
3.8
Constantan
0.01
Tungsten
4.5
3.93
Semiconductors
Copper
Gold
Carbon (graphite)
3.4
-0.5
Iron
5.0
Germanium
-50
Lead
4.3
Silicon
-70

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