Fill a table like the one below with each electrical appliance used in your home: its power P in kilowatts, how many there are (n), and how many hours a day it is used (t).
Work out each appliance's daily consumption with \( P \times n \times t \).
Add the daily consumption of all the appliances.
Multiply that total by 30 to get the monthly consumption.
Multiply the monthly consumption by the rate per unit to find the monthly bill.
Appliance
CFL lamp
LED bulb
......
......
......
Power (P) in kilowatts
15 W = 15/1000 kW
Number (n)
Time used each day (t) in hours
Consumption = P × n × t
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