A eletric bulb of 160 watt works for 6 hours a day.calculate the units of energy consumed in 15 days and also calculate the amount to pay.If each unit mass is ₹2.50.
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Explanation:
1 electric mass unit =1000 watt
No. of hours bulb works in 15 days = 15 × 6= 90
No.of watts consumed in 90 days = 160 × 90=14400 = 14.4 electric mass unit .
Amount to be paid for 14.4 units = 14.4 ×2.5 =36 rupees
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Answer:
Energy consumed (1 day)=power in watt X time in hour / 1000
∴ Energy consumed = 160 X 6/1000=0.96 Kwh
Energy consumed for 15 days = 0.96 X 15=14.4 Kwh
1 Kwh=1 unit
∴ cost=14.4 X 2.50= Rs.36
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