Question

In a school there are 10 electric fans each of 40 W runs for 5 hours a day, 5 electric lamps each of 60 W runs for 3 hours daily. If the cost of each unit of electricity be 5, then calculate the monthly cost for electricity?​

Answer 1

Answer:

Electrical energy consumed by the bulb per day = P x t = 60 W x 6h = 360 Wh

1 unit = 1 kW h = 1000 W h

1 W h = (1/1000) unit

360 W h = 0.360 unit

Electrical energy consumed by the bulb per day = 0.36 unit

Explanation:

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