an electric bulb 40 watt and 1 horsepower electric motor used for 5 hours and half hour respectively how many units of electricity will be consumed?
prepare electric bill for January month 4.25 rupees per unit
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Answer:
Given : P=40 W =0.04 kW t=5 h
Thus total energy used in 5 hours
E=Pt=0.04×5=0.2 kWh
∴ Bill to be paid = 0.2×2= Rs 0.4
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