A 100-W, 120-V lightbulb has a resistance of when cold (20°C) and when on (hot). Calc...
A 100-W, 120-V lightbulb has a resistance of 
when cold (20°C) and 
when on (hot). Calculate its power consumption (a) at the instant it is turned on, and (b) after a few moments when it is hot.
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Solutions For Problems in Chapter 18
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