When an incandescent light bulb is turned on, a constant
Chapter 20, Problem 20.12(choose chapter or problem)
When an incandescent light bulb is turned on, a constant voltage is applied across the tungsten filament, which then becomes white hot. The temperature coefficient of resistivity for tungsten is a positive number. What happens to the power delivered to the bulb as the filament heats up? (a) It decreases. (b) It increases. (c) It remains constant
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