Question

How long does a 60W bulb take to consume an energy of 0.72 units?

Answer 1

Here is your answer
If the bulb is operated for an average of six hours per day, then over the course of a year it will use approximately (6 X 365 X 60) = 131 kilowatts of electricity. At an average cost of 12 cents per kilowatt-hour, the 60-watt incandescent bulb will cost approximately $17 per year to operate.

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