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प्रश्न
It would cost a man Rs. 3.50 to buy 1.0 kW h of electrical energy from the Main Electricity Board. His generator has a maximum power of 2.0 kW. The generator produces energy at this maximum power for 3 hours. Calculate how much it would cost to buy the same amount of energy from the Main Electricity Board.
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उत्तर
E = P × T
So, E = 3 × 2
E = 6 kWh
Cost of buying electricity from the main electricity board = 6 × 3.50 = Rs. 21.0
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