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October 31, 2014

October 31, 2014

Posted by **christina** on Sunday, February 24, 2008 at 10:22pm.

i am taking power engineering electrical 188.

the question is:

how much will ity cost to use 6 lamps of 100 W each if they burn for 5 hours each evening in a month (30 days). the cost of electricity is 0.04 cents per kwh?

how do u solve this question? the answer is $3.60

- electricity 188 -
**Quidditch**, Sunday, February 24, 2008 at 10:45pm(6 lamps) * (100W/lamp) * (5 hours/day) * (30 days)

You will end up with a number of watt hours. Convert watt hours to kilo watt hours. Multiply that number by $0.04

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