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प्रश्न
Calculate the energy released by a heater, which draws a current of 5 A at 220 V for 1 min.
संख्यात्मक
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उत्तर
Current = 5 A; voltage = 220 V; t = 1 min = 60 s
E = V × I × t
= 220 × 5 × 60
= 66000 J
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