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. A 100W BULB IS OPERATED FOR 8 HOURS DAILY. FIND THE COST OFOPERATING THIS BULB FOR 30 DAYS.ASSUMING THE COST OF ELECTRICITY IS 34PER UNITAns: Rs. 96 |
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Answer» tion:Energy = Power*timeEnergy consumed by 100 W BULB PER day = 2∗100 WH = 0.2 kWhEnergy consumed by 40 W bulbs per day = 4∗40∗4 Wh = 0.64 kWhTotal energy consumed per day = 0.2 + 0.64 kWh = 0.84 kWh THEREFORE, the energy consumed in 30 days = 30∗0.84 kWh = 25.2 kWh |
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