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Homework Help: Is kJ/h equal to KWh?

  1. Jan 22, 2006 #1
    I'm having trouble understanding some basic energy stuff. I know that kiloWatt is kJ/s, and if you divide by 3600s instead you get kWh. But wouldn't you just get kJ/h? How is that equal to kWh?
  2. jcsd
  3. Jan 22, 2006 #2


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    If you divide kJ/s by 3600 s then you get kJ/s^2 which would represent the rate of change of power.

    What you mean to do is to multiply power (kJ/s) by time to get energy (kJ). A "kilowatt hour" is the amount of energy conveyed in 1 hour = 3600 seconds when power is used or produced at a constant rate of 1 kW = 1,000 W.
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