Question
Asked Dec 4, 2019
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a heater is left on and uses 0.58 A when plugged into a 120 V line.  if electric power costs 12 cents per kilowatt hour, what is the cost of runnign the heater for 240 hours?

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Expert Answer

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Assume that the current and voltage are RMS value, and the heater is p...

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P I'R = IV (0.58A)(120V) = 69.6 W =0.0696kW

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