Question

A 100W electric bulb is lighted for 3 hour. And four 60W electric bulbs for 2 hours. Calculate units of energy consumed in a month of 30 days.

Answer 1

Answer:

23.4 kWh

Explanation:

100 W bulb

100 W = 0.1 kW

Energy=power * time

energy = 0.1*3

energy=0.3 kWh

60 W bulb

60W= 0.06 kW

energy=Power*time

energy = 0.06*2

energy=0.12 kWh

4 Bulb = 4 *0.12 =0.48 kWh

Total energy in one day = 1 bulb 100 W + 4 bulb 60 W +

= 0.3 + 0.48 =0.78 kWh

Total energy in 30 days = 30 * 0.78 = 23.4 kWh.

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