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There are two things missing in this question. The period of time the 1000 watts is being used and the price that you are paying for a kWh. If the 1000 watts was left on for an hour it would be 1 kWh. The cost per kWh is still needed, so it can be multiplied the the 1 kWh, to find a cost.

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14y ago
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13y ago

Electricity is usually charged by the Killowatt Hour. 500 watt bulb is .5 KW.

Look on your electric bill for the charge per KWh and multiplu by .5

An average cost in 12 cents per KWh so the cost is about 6 cents per hour.

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12y ago

To calculate an answer, a time interval must be given. The utility company bills the customer in kW/h of use. Use a time interval and multiply it by the 5 watts. Divide the answer by 1000 to give you kilowatts. Multiply that answer by the cost of electricity in your area. This can be found on your utility bill or you can phone the utility company to see what you are charged. It will be stated as so may cents per kilowatt hours. I pay .089 cents per kilowatt hour as an example.

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15y ago

depends on the rateing of the power source

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14y ago

Check with your power company on the price per kilowatt. Multiply that price by 1 (1,000 watts is 1 kilowatt).

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13y ago

Watts are computed as amps times volts (AxV=Watts). Using that formula we know Watts and volts so w/v = amps. therefore 500/110=4.55 (rounded off) so they draw 4.55 amps roughly.

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11y ago

way more than you want to spend ~ it is year 2013 purchase LED Lights! Save our planet and spot wasting energy. Busy Bee LEDs

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Q: How much does it cost to run a 500 watt bulb?
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