An electric bulb of 60w is used for 5 hours a day. Calculate the energy consumed in one day by the tube?
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Answer:
Power = Energy / time
Energy = power × time = 60 × 5 = 300J
In 5 hours the energy is 300J
In one hour the energy is 300/5 = 60J
One day = 24 hours
Energy for 24 hours = 24 × 60 = 1440J
Therefore the energy consumed by the bulb is 1440 Joules
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