how would one figure the electrical cost of running items in home?

Question

i would like to know the math formula to figure out how to lets say figure the cost of keeping a 60 watt light on for 24 hours

Answer 1

An electric company charges you by kilowatt hours. 60 watts = .06 kilowatts so a 60 watt light bulb x 24 hours is 1.44 kilowatt hours. So if you electric company charges for example 10 cents per kilowatt hour, that would cost 14 cents.

The formula for kilowatt hours would just be watts/1000 X hours or watt hours/1000 x time.

Answer 2

On your power bill you are charged so much money per kilowatt hour (1000 watts per one hour).

For example, on my bill for the month of July 15 - Aug 15 I was charged $ 145.95 for 1399 KWH of usage. Doing simple division that reduces to about 10.4 cents per kilowatt hour.

Now a 60 watt bulb running for 24 hours would cost you
$ 0.104 price per kilowatt x 60 watts x 24 hours divided by 1000 watts in a kilowatt.

Answer: $ 0.14976 or about 15 cents

Answer 3

Power * time is usually measured in Watt-hours (Wh)

so a 60 watt bulb running 24h would be 60w*24h=1440 Wh

Your utility company bills by Kilowatt hour (KWh). 1KWh=1000Wh. The price varies by area, time of year, and consumption.

The whole formula would be something like this:
x=wattage of appliance
n=time appliance is powered on
p=price of 1 kWh of power

((xn)/1000)p

Answer 4

1 electrical unit of electrical energy=1kilowatt hour
multiply the wattage/rating by the no of hours and divide by 1000 you get the no of units.multiply by the cost per unit and you get the bill
e.g.=60*24/1000=1.44 units

Answer 5

Most electircal devices specifiy in the owners manual or on the machine itself, the power (energy/time) consuption of the item then you multiply that by how much time the item is being used or actually just plugged in, then multiply that by your rate on your energy bill.