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प्रश्न
A radio set of 60 W runs for 50 hours. How much electrical energy is consumed? Give your answer in kWh.
संख्यात्मक
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उत्तर
We know that, E =Pt
Given, P = 60 W= 0.06 kW
and, t = 50 hours
.·. E=0.06 x 50=3kWh
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