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Power

Five electric...

Question

Five electric fans of 120 watts each are used for 4 hours. Calculate the electrical energy consumed in kilowatt hours.

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Solution

Power of 1 fan = 120 W
Power of 5 fans = 5 x 120 = 600 W = 0.6 kW
Time = 4 hours
Electrical energy consumed = 0.6 x 4 = 2.4 kWh or 2.4 'units'

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