A 100-W, 120-V lightbulb has a resistance of 12 when cold (20oC) and 140 when on (hot).
Question:
(a) The instant it is turned on, and.
(b) After a few moments when it is hot.
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Related Book For
College Physics
ISBN: 978-0495113690
7th Edition
Authors: Raymond A. Serway, Jerry S. Faughn, Chris Vuille, Charles A. Bennett
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