In a house three lamps of 100 W, 60 W and 40 W are kept on for 25 hours. How many units of energy will be consumed ? pls answer with explanation i will put 5 stars.
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Simply add together the wattage of the three lamps.
Total power=100w + 60w + 40w = 200 watts
And we know that Watts is the equivalent of Joules/second
Total power= 200 Joules/second
If the three bulbs are continuously turned on for 25 hours(90,000 seconds), they will consume a total energy(Joules) of:
Total energy= 200 Joules/second × 90,000 seconds
Total energy= 18,000,000 Joules(18 MJ)
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