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

Given,

Power = 120 watts = 0.12 kW;

Time, t = 4 hr

Hence, the energy consumed by one fan = P × t

= 0.12 × 4

= 0.48 KWh

Hence, the energy consumed by 5 fans,

= 0.48 x 5

=2.4 kWh

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