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Homework Help: Electrical energy

  1. Sep 18, 2010 #1
    1. The problem statement, all variables and given/known data
    The total consumption of electrical energy in Country A is about 1.5 x 1015 Joules/year.
    What is the average rate of electrical energy consumption in Watts?

    So, my friend and I were arguing.
    He said, 1.5 x 1015 is the answer.
    I said, since watts is equal to Joules / sec not Joules / year, we should convert 1.5 x 1015 to Joules /sec.

    So, who's right, me or my friend?
    Please answer
  2. jcsd
  3. Sep 18, 2010 #2


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    Homework Helper

    1 W = 1 J/s

    So yes you need to convert the years to seconds.
  4. Sep 18, 2010 #3
    Ok, thanx rockfreak
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