What is the resistance of a silver resistor that is made from a 12.0 cm long wire thatis has a cross sectional area of 1.4 mm^2?Table 16.8 The resistivity p ofdifferent materials.Resistivity ( m,at 20 °C)MaterialMetalsSilverCopperAluminumTungstenConstantan1.6 X 101.7 X 102.8 X 105.2 X 1050 X 10DielectricsOrdinary glassHard rubberShellacDry wood9 X 101 X 101 x 1010 -10Human tissueBlood1.52025Lung tissueFatTrunkSkin5000-50,000Geological materialsIgneous rocksSedimentary rocksGround water10-1071-10~10O 3.61 m2O 1.63 m23.16 m2O1.36 m2

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What is the resistance of a silver resistor that is made from a 12.0 cm long wire that is has a cross sectional area of 1.4 mm^2? Table 16.8 The resistivity p of different materials. Resistivity (2 m, at 20 °C) Material Metals Silver 1.6 X 108 17Y 10-8

What is the resistance of a silver resistor that is made from a 12.0 cm long wire that is has a cross sectional area of 1.4 mm^2? Table 16.8 The resistivity p of different materials. Resistivity (2 m, at 20 °C) Material Metals Silver 1.6 X 108 17Y 10-8

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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

What is the resistance of a silver resistor that is made from a 12.0 cm long wire that
is has a cross sectional area of 1.4 mm^2?
Table 16.8 The resistivity p of
different materials.
Resistivity ( 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 10
50 X 10
Dielectrics
Ordinary glass
Hard rubber
Shellac
Dry wood
9 X 10
1 X 10
1 x 10
10 -10
Human tissue
Blood
1.5
20
25
Lung tissue
Fat
Trunk
Skin
5000-50,000
Geological materials
Igneous rocks
Sedimentary rocks
Ground water
10-107
1-10
~10
O 3.61 m2
O 1.63 m2
3.16 m2
O
1.36 m2

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