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Q: How much will it cost to run a 100 watt light bulb for one hour if electricity costs ten cents per kilowatt hour?

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The definition of a Watt is 1 Joule/second. Therefore: 150W * 60 Sec = 9000 Joules / minute. In units more applicable home energy use, 9000 Joules/minute equals .0025 Kilowatt Hours (KWh)/minute. On a cost basis, if for example, electricity from a power company costs $.20 per KWh, the 150W light bulb costs 3 cents per hour to use.

Very little but it depends on your particular cost for electricity and the rating on the light bulb. Typically LED bulbs use less than 10W of power. If your electric company changes say 10 cents per kilowatt hour, then it would cost 10cents*0.010kW = 0.1 cents.

Pretty much, just one. Your 100 watt lightbulb uses one tenth of a kilowatt every hour. Ten light bulbs on use 1 kilowatt of power in one hour. When your water heater runs, it takes about 20 minutes to use 1 kilowatt. One kilowatt goes quick and is nothing. At around 10 cents per kilowatt, it takes a while for your power bill to add up.

You are billed based on kilowatt-hours. Your light is 1 KW. If you had on continually for the month that would be about 30 days x 24 hrs = 270 KWh. An average cost per KWh is about 12 cents so your cost would be about $86.40 for continuous use per month.

A 30-watt bulb uses 0.03 kilowatt-hours every hour, or 30 kilowatt-hours in 1000 hours. To find the kilowatt-hours, multiply 0.03 by the time in hours.

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If your electricity costs 10 cents per kilowatt-hour, it would be about 0.6 of a cent per hour, or about 14.4 cents per day.

(100 W) x (10 hours) = (1 Kilowatt-Hour) x (14Â¢/KWH) = 14Â¢

Depends of what you mean by electricity. The 350 Watts says for each hour you have the light on you consume 350 Watt Hours of electricity. This is how you are charged by the Electric Company. Depending on where you live you may pay about 12 cents per 1,000 Watt hours or 1 Kilowatt hour. So your bulb costs about 4 cents per hour in electricity. To compute the current you need to know the voltage. Watts = Current x Volts.

A simple electrical device is a 60 watt light bulb. The bulb is consuming 60 watts of electricity from the moment you turn it on. If you keep that light bulb on for 10 hours the power used is 60 watts x 10 hours = 600 watts of power. Electricity is sold in Kilowatt Hours. A Kilowatt is 1000 watts of power. Depending on the state you live in, it sells for 7 to 18 cents per Kilowatt Hour. So if you leave that light bulb on 10 hours per day for 30 days you will have used up 600 watts x 30 days = 18,000 watts of electricity = 18 Kilowatt Hours. At an average cost of 10 cents per Kilowatt Hour that bulb costs you $1.80 per month to leave on. The formula is watts x time x cost per Kilowatt Hour = cost of use...Answer provided by Gene Evangelist

It depends on variables. The amount your supplier charges per kilowatt. The wattage of the lamp. and how long it is left on.

1 kilowatt-hour is 1000 watt-hours and 60 watt bulb consume during 1 hour 60 watt-hours of electricity, so then it costs 0.6 cent =>60/1000=0,06*price of 1 kilowatt-hour = 0.6 cent

A kilowatt is 1,000 watts. A 60 watt bulb uses 60 watts in an hour. So, in half an hour it uses 30 watts. Now if a kilowatt costs 20 cents, what does 0.03 kilowatt cost?

A 60-watt bulb uses 60 watt-hours or 0.06 kWh each hour, so the cost is 0.06 x 10 cents, 0.6 cents per hour.

Take the wattage of the light times the length of time in hours that the light is left on. Divide this figure by 1000 to get kilowatt hours, multiply that figure by the cost of electricity in your area in cents per kilowatt hour. The final figure will give you the cost of operating the light or wasted electricity if no one benefiting from the light.For more information see the answer to the Related Question shown below.

all inclusive, use 10 cents for any estimates and you are good to go. one kilowatt hour will run a 1hp electric motor or 17 60 watts light bulbs for one hour. OR 1 kwh is enough to leave one light bulb on for 17 hours.AnswerYou are not charged by the kilowatt (power) but by the kilowatt hour (energy). Check with your electricity supply company to find out how much they charge per kilowatt hour.

A 1-watt bulb uses 3600 watt-hours every hour, which is 1/1000 of a kilowatt-hour, so the cost is 0.01 cents.

A 100 watt light bulb lit for 10 hours will cost $0.08; lit for only one hour it will cost one tenth as much -- or eight tenths of a penny.

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