How to know how much you will pay for every minute u consume electricity on an appliance?

If im paying the electric company for kilowatt-hour. how can i compute how much do i pay for every appliance i use in every time.|||Every appliance states the power used (that's amount of energy per unit time). A microwave oven may be 1000 Watts for instance. Now the kilowatt-hour is a unit of energy that corresponds to an appliance that burns 1 kW continuously during 1 hour. (Like our oven.) You may want to convert the kWh to Joules: multiply power by time, that is 1000 W by 1 hour in seconds. Let's do it:





1 kWh = 1000 x 60 minutes x 60 seconds = 3.6 x 10**6 J





Now, say a lightbulb of 100 W for 5 minutes will spend





E = 100 x 5 minutes x 60 seconds = 30 x 10**3 J





You know the price of 1 kWh (it's in your electric bill), so you can figure how much costs an appliance of given wattage for a specified period of time.|||Take the wattage, convert it to kilowatts, multiply it by the time you run it and you'll have the kilowatt-hours.





Then multiply the kwh by the rate (if it's in $/kwh) and you have the cost.





Note that you'll have to estimate how long it will be on to estimate the cost.





Here's a calculation for the daily cost of a 100w light bulb at 11 cents/kwh on for 12 hours per day.





100w = 100/1000 = .1 kw x 12 hours = 1.2 kwh per day





1.2 kwh x $ 0.11 = $ 1.32 per day.