Find the cost if 4 bulbs of 500 W each, 10 hours in a day consume electrical
energy. Rate per unit is Rs 13/unit
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Answer:
Rs. 260
Explanation:
Energy of 1 bulb=500W
Energy of 4 bulb=500 x 4=2000W or 2kW
Energy consumed in 1 hr=2kWhr.
Energy consumed in 10 hr a day= 2 x 10 =20kWhr
Cost of 1 unit= Rs.13
Cost of 20 unit= Rs.13 x 20 = Rs. 260
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