A 100-W lightbulb has a resistance of about 12 when cold (20oC) and 140 when on (hot).

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A 100-W lightbulb has a resistance of about 12Ω when cold (20oC) and 140Ω when on (hot). Estimate the temperature of the filament when hot assuming an average temperature coefficient of resistivity a = 0.0060(Co)-1.

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College Physics

ISBN: 978-0495113690

7th Edition

Authors: Raymond A. Serway, Jerry S. Faughn, Chris Vuille, Charles A. Bennett

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Question Posted: Jun 05, 2010 12:46 AM

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A 100-W lightbulb has a resistance of about 12 when cold (20oC) and 140 when on (hot).

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Use Eq 184 multiplied by LA s...View the full answer

College Physics

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