Question

an electric bulb of 20watt works for 2hr a day calculate the units of energy consumed in 30 days

Answer 1

20 watt power = 0.02 KW
Thus in 1 day it consumes = 0.02 × 2 =0.04 KJ
Thus in 30 days it consumes = 0.04 ×30 units =1.2 units
Hope this is ur required answer.

Answer 2

HEYA !!

HERE IS YOUR ANSWER

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P = 20 W
= 20 / 1000 kW
= 0.02 kW
t = 2 hr.

Energy consumed = P × t
= 0.02 × 2
= 0.04 kJ

Energy consumed in 30 days = 30 × 0.04
= 1.2 kJ

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# GUDIYA

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