? asked in Science & MathematicsEngineering · 9 years ago

how much electricity does a electric light bulb and a CFL uses in an hour or in a day?

how much electricity does a electric light bulb and a CFL uses in an hour or in a day?

Please give the answer in watt or kilowatt..

2 Answers

Relevance
  • Frank
    Lv 7
    9 years ago
    Best Answer

    An average CFL uses about 7 watts. Check the package, or look at the labelling on the bulb itself for the exact number.

    To convert that to kilowatts, divide by 1000. So, the average CFL uses about 0.007 kilowatts.

    Multiply that by the number of hours it runs, and you get the kilowatt-hours of electricity that it uses.

    So, 0.007 kilowatts for one hour is 0.007 kilowatt-hours. 0.007 kilowatts for 24 hours is 0.168 kilowatt-hours.

    In my city, I pay about 14 cents per kilowatt hour.

  • 9 years ago

    Cfl comes in diffrent ratings 7, 14, 20W etc. Take this value divide it by 1000 to get kilowatt.

    Now if you want energy consumed for one hour multiply it by one.

    Again if U want bill for that multiply it by Rs/unit in your area.

Still have questions? Get your answers by asking now.