- A 100 W lightbulb has a resistance of about 12 when cold (20 deg * C) and 156 when on (hot). Estimate the temperature of the filament when hot assuming an average temperature coefficient of resistivity a = 0.0045(C) ^ - 1.

- A 100 W lightbulb has a resistance of about 12 when cold (20 deg * C) and 156 when on (hot). Estimate the temperature of the filament when hot assuming an average temperature coefficient of resistivity a = 0.0045(C) ^ - 1.

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

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter2: Basic Electricity

Section: Chapter Questions

Problem 18RQ: True or False: All atoms tend to lose electrons.

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Question

-
A 100 W lightbulb has a resistance of about 12
when cold (20 deg * C) and 156 when on (hot).
Estimate the temperature of the filament when hot
assuming an average temperature coefficient of
resistivity a = 0.0045(C) ^ - 1.

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