A 100 W, 120 V lightbulb has a resistance of 12 when cold (20oC) and 140 when on (hot) Calculate its power consumption at (a) The instant it is turned on, and (b) After a few moments when it is hot ...

A 100-W, 120-V lightbulb has a resistance of 12 when cold (20oC) and 140 when on (hot).

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A 100-W, 120-V lightbulb has a resistance of 12 Ω when cold (20oC) and 140Ω when on (hot). Calculate its power consumption at.
(a) The instant it is turned on, and.
(b) After a few moments when it is hot.

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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 01:51 AM

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A 100-W, 120-V lightbulb has a resistance of 12 when cold (20oC) and 140 when on (hot).

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Use Eq 186 V ...View the full answer

College Physics

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