TABLE 26.2 Resistivities and Temperature Coefficients of Resistivity for Various Materials Temperature Coefficient a [(°C)-'] Material Resistivitya (N • m) Silver 1.59 X 10-8 3.8 × 10-3 1.7 × 10-8 3.9 X 10-3 Соpper Gold 2.44 X 10-8 3.4 X 10-3 Aluminum 2.82 × 10-8 3.9 X 10-3 Tungsten 5.6 X 10-8 4.5 X 10-3 Iron 10 X 10-8 5.0 X 10-3 Platinum 11 X 10-8 3.92 X 10-3 Lead 22 X 10-8 3.9 X 10-3 1.00 X 10-6 3.5 X 10-5 Nichrome 0.4 X 10-3 Carbon -0.5 × 10-3 Germanium 0.46 -48 X 10-3 Silicond 2.3 × 103 1010 to 1014 -75 X 10-3 Glass Hard rubber 1013 Sulfur 1015 Quartz (fused) 75 X 1016 * All values at 20°C. All elements in this table are assumed to be free of impurities. b See Section 26.4. CA nickel-chromium alloy commonly used in heating elements. The resistivity of Nichrome varies with composition and ranges between 1.00 x 10-6 and 1.50 × 10-6N · m. d The resistivity of silicon is very sensitive to purity. The value can be changed by several orders of magnitude when it is doped with other atoms.
TABLE 26.2 Resistivities and Temperature Coefficients of Resistivity for Various Materials Temperature Coefficient a [(°C)-'] Material Resistivitya (N • m) Silver 1.59 X 10-8 3.8 × 10-3 1.7 × 10-8 3.9 X 10-3 Соpper Gold 2.44 X 10-8 3.4 X 10-3 Aluminum 2.82 × 10-8 3.9 X 10-3 Tungsten 5.6 X 10-8 4.5 X 10-3 Iron 10 X 10-8 5.0 X 10-3 Platinum 11 X 10-8 3.92 X 10-3 Lead 22 X 10-8 3.9 X 10-3 1.00 X 10-6 3.5 X 10-5 Nichrome 0.4 X 10-3 Carbon -0.5 × 10-3 Germanium 0.46 -48 X 10-3 Silicond 2.3 × 103 1010 to 1014 -75 X 10-3 Glass Hard rubber 1013 Sulfur 1015 Quartz (fused) 75 X 1016 * All values at 20°C. All elements in this table are assumed to be free of impurities. b See Section 26.4. CA nickel-chromium alloy commonly used in heating elements. The resistivity of Nichrome varies with composition and ranges between 1.00 x 10-6 and 1.50 × 10-6N · m. d The resistivity of silicon is very sensitive to purity. The value can be changed by several orders of magnitude when it is doped with other atoms.
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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An aluminum wire with a diameter of 0.100 mm has a uniform electric field of 0.200 V/m imposed along its entire length. The temperature of the wire is 50.0°C. Assume one free electron per atom. (a) Use the information in Table to determine the resistivity of aluminum at this temperature. (b) What is the current density in the wire? (c) What is the total current in the wire? (d) What is the drift speed of the
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