an electric fan of power 100w is allowed to run 10 hrs/ day. what is the cost of energy to operate it for 30 days at Rs. 4 per kwh?
Answers
Answer:
Explanation:
Five bulbs consume the power of 100 W each.
The total power consumed by 5 bulbs = 5 x 100 = 500 W = 0.5 kilowatt
Electrical energy consumed daily is, E = P x t = 0.5 kW x 10 hours = 5 kWh.
Thus, total electrical energy consumed for 30 days = 5 kWh x 30 days = 150 kWh or 150 units.
The cost of 1 unit of electricity = Rs. 4
Thus, the total cost of electricity = Rs. 4 x 150 = Rs. 600
Answer:
An electric fan consume the power of 100 W each.
The total power consumed by fan = 5 x 100 = 500 W = 0.5 kilowatt
Electrical energy consumed daily is, E = P x t = 0.5 kW x 10 hours = 5 kWh.
Thus, total electrical energy consumed for 30 days = 5 kWh x 30 days = 150 kWh or 150 units.
The cost of 1 unit of electricity = Rs. 4
Thus, the total cost of electricity = Rs. 4 x 150 = Rs. 600
Explanation:
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