How much does it cost to light a 100 watt bulb for 8 hours?

+1 vote
asked Oct 15, 2017 in Mathematics by woodtick55 (310 points)
How much does it cost to light a 100 watt bulb for 8 hours?

1 Answer

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answered Oct 16, 2017 by Shawn (99,990 points)
You would have to run the 100 watt light bulb for 10 hours to use 1 KWH.

So if you pay 10 cents per kwh it will probably cost you about 8 cents to run the light bulb for 8 hours.

Not too bad of a cost to run a 100 watt light bulb.

The cost though will depend on how much you pay for your electricity per kwh.

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