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प्रश्न
A bulb of 40 W is used for 12.5 h each day for 30 days. Calculate the electrical energy consumed.
उत्तर
Energy consumed per day, E = p × t
= 40 × 12.5
= 500 wh
Energy consumed for 30 days
E = 500 × 30 = 15000 wh = 15 kwh
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