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electricity 188

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hi my name is christina and i have an electrical question i need help with.
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 -

    (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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