. A certain lightbulb has a tungsten filament with a resistance of 19.0 N when at 20.0°C and 140 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 19.0 N when at 20.0°C and 140 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.

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

18. A certain lightbulb has a tungsten filament with a resistance
of 19.0 Q when at 20.0°C and 140 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.

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