Respuesta :
Electrical energy consumption is measured at kilowatt-hour (KWh). Thus the cost of energy consumed for the month is $28.512
What does kilowatt-hour mean?
- One kilowatt of power over the course of one hour is a kilowatt-hour of energy.
- As an example, a 100-watt light bulb would need 10 hours to consume 1kWh, whereas an oven would consume that same 1kWh amount in about 30 minutes.
The rate of consumption of energy is measured in kilowatt-hour.
In the given question
11 cent is paid per kilowatt-hour.
60 watts of light for 1 hour = 0.06 KWh
3 light bulbs of 60 Watts each for 1 hour = 3 x 0.06
= 0.18 KWh
But,
30 days = 30 x 24 hours
= 1440 hours
The total energy consumed for the month = 1440 x 0.18
= 259.20 KWH
The total cost for the month = 0.11 x 259.20
= $28.512
Thus, the total cost for the month is $28.512
Learn more about kilowatt-hour
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