A 100 W lightbulb is plugged into a standard 120 V outlet.

Chapter , Problem 49

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A 100 W lightbulb is plugged into a standard 120 V outlet. (a) How much does it cost per 31-day month to leave the light turned on continuously? Assume electrical energy costs US$0.06/kW&h. (b) What is the resistance of the bulb? (c) What is the current in the bulb?

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