A certain lightbulb has a tungsten filament with a resistance of 22.4 N when at 20.0°C and 143 N when hot. Assume the resistivity of tungsten varies linearly with temperature even over the large temperature range involved here. Find the temperature of the hot filament.

A certain lightbulb has a tungsten filament with a resistance of 22.4 N when at 20.0°C and 143 N when hot. Assume the resistivity of tungsten varies linearly with temperature even over the large temperature range involved here. Find the temperature of the hot filament.

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter7: Electricity

Section: Chapter Questions

Problem 13P

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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

A certain lightbullb has a tungsten filament with a resistance of 22.4 N when at 20.0°C and 143 N when hot. Assume the resistivity
of tungsten varies linearly with temperature even over the large temperature range involved here. Find the temperature of the hot
filament.
1871.44874605x
Your response differs from the correct answer by more than 10%. Double check your calculations.°C

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