Answered: A tungsten filament wire has a…

A tungsten filament wire has a resistance of 20-Ω at 25°C. What will be its temperature at 100°C? Tungsten; Resistivity @20°C: 5.5x10-8 Ω-m Temperature Coefficient @20°C: 45.05x10-4/°C

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter16: Installation Of Heating, Cooling, And Refrigeration Systems

Section: Chapter Questions

Problem 2RQ

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Every material has a unique composition that defines its magnetic behavior. Some materials get attracted towards a magnet and are called magnetic materials. Based on the magnetic properties held by each material, they are classified into different types.

Question

A tungsten filament wire has a resistance of 20-Ω
at 25°C. What will be its temperature at 100°C?
Tungsten;
Resistivity @20°C: 5.5x10-8 Ω-m
Temperature Coefficient @20°C: 45.05x10-4/°C

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