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11. Work, Energy and Power
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Q25 of 54 Page 135

If a bulb of 60 watts is lighted 8 hours daily then how much unit will be consumed in 30 days?

Power (P) = 60 W =


Unit consumed per day = 0.06 × 8 = 0.48 kWh


Unit consumed in 30 days = 0.48 × 30 = 14.4 kWh = 14.4 units


Hence, unit consumed by the bulb in 30 days is 14.4 units.


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Questions · 54
11. Work, Energy and Power
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