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Calculate the energy consumed by the bulb in one day.
Physics
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Answer
D
Step-by-step solution
3 stepsCalculate the energy consumed by the bulb in one day.
The power of the bulb is .
The time it is lighted for is .
The energy consumed is given by the formula .Convert the energy from Watt-hours (Wh) to kilowatt-hours (kWh).
Since , we divide the energy in Wh by 1000.
Calculate the total cost.
The cost of electricity is N 40 per kWh.
The total cost is the energy consumed (in kWh) multiplied by the rate per kWh.The correct option is D.
The final answer is .
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