A lamp rated 60W and an electric iron rated 800W are used for 6 hours everyday. Calculate the total energy consumed in 30 days.
Given: A lamp rated 60W and an electric iron rated 800W are used for 6 hours every day.
To find: Total energy consumed in 30 days.
Solution:
Total power consumption = Power consumption of lamp + Power consumption of iron
= 60 W+ 800 W= 860 W
Power consumption = 860 W
Time = 6 hours each day for 30 days.
Total time for 30 days = $6 \ hours \times 30 = 180 \ hours $
We know, $Energy = Power \times Time$
So, $Energy = 860 \ watt \times 180 \ hour$
= 1,54,800 watt-hour
we know 1000 watt-hour = 1 kilowatt-hour
So, Energy consumed = 154.8 kWh
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