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प्रश्न
How much energy does a 100 W electric bulb transfer in 1 minute?
(a) 100 J
(b) 600 J
(c) 3600 J
(d) 6000 J
उत्तर
(d) 6000 J
Energy transferred, E = power x time = 100 W x 60 s = 6000 J
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