How much does it cost to run a light bulb for an hour?
by 
The Curious Bag
ANSWERS: 1
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Using a generic electrical cost calculator online, the cost of running one standard 75-watt light bulb for one hour would add $0.01 cent to your electric bill. This is based on a national average cost per kilowatt hour (KWH) of $0.10120. Your actual KWH cost is available from your local utility company.
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