A tungsten wire is used to determine the melting point of indium. The resistance of the tungsten wire is 2.788 Ω at 20 degrees Celsius and increases to 5.636 Ω as the indium starts to melt. αtungsten= 4.50 x 10-3 (degrees Celsius)-1. What is the melting temperature of indium in degrees Celsius?

A tungsten wire is used to determine the melting point of indium. The resistance of the tungsten wire is 2.788 Ω at 20 degrees Celsius and increases to 5.636 Ω as the indium starts to melt. αtungsten= 4.50 x 10-3 (degrees Celsius)-1. What is the melting temperature of indium in degrees Celsius?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

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Chapter9: Current And Resistance

Section: Chapter Questions

Problem 28P: An aluminum wire 1.628 mm in diameter (14-gauge) carries a current of 3.00 amps, (a) What is the...

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Concept explainers

Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.

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A tungsten wire is used to determine the melting point of indium. The resistance of the tungsten wire is 2.788 Ω at 20 degrees Celsius and increases to 5.636 Ω as the indium starts to melt. α_tungsten= 4.50 x 10^-3(degrees Celsius)^-1. What is the melting temperature of indium in degrees Celsius?

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