An aluminum resistance thermometer consists of a coil of 5.8273 mm diameter wirein a coil. Determine the length of wire needed so that the coil's resistance at 20°Cis 330 Q.Table 16.8 The resistivity p ofdifferent materials.Resistivity (2 m,at 20 °C)MaterialMetalsSilverCopperAluminumTungstenConstantan1.6 X 101.7 X 102.8 X 105.2 X 10850 X 10DielectricsOrdinary glassHard rubberShellacDry wood9 X 1011 X 10161 X 101410 -1016Human tissueBloodLung tissueFat1.52025TrunkSkin5000-50,000Geological materialsIgneous rocksSedimentary rocksGround water10-1071-10510

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An aluminum resistance thermometer consists of a coil of 5.8273 mm diameter wire in a coil. Determine the length of wire needed so that the coil's resistance at 20°C is 330 Q.

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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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

An aluminum resistance thermometer consists of a coil of 5.8273 mm diameter wire
in a coil. Determine the length of wire needed so that the coil's resistance at 20°C
is 330 Q.
Table 16.8 The resistivity p of
different materials.
Resistivity (2 m,
at 20 °C)
Material
Metals
Silver
Copper
Aluminum
Tungsten
Constantan
1.6 X 10
1.7 X 10
2.8 X 10
5.2 X 108
50 X 10
Dielectrics
Ordinary glass
Hard rubber
Shellac
Dry wood
9 X 101
1 X 1016
1 X 1014
10 -1016
Human tissue
Blood
Lung tissue
Fat
1.5
20
25
Trunk
Skin
5000-50,000
Geological materials
Igneous rocks
Sedimentary rocks
Ground water
10-107
1-105
10

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