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Homework Help: Electric Power

  1. Aug 5, 2005 #1
    What really does the word 'power" mean in the following context?

    An electric power of 110kW is transmitted through the cables.

    Input power of the transformer
     
  2. jcsd
  3. Aug 5, 2005 #2
    P = UI, this is the power the current heats the cable + the power the device in the other end is using.
     
  4. Aug 5, 2005 #3

    Pengwuino

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    Gold Member

    That means that 110,000 joules of electrical energy is being transmitted every second.
     
  5. Aug 5, 2005 #4
    how about input power and output power?
     
  6. Aug 5, 2005 #5

    Pengwuino

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    Gold Member

    ... sounds like theres an extra complication about this problem or else itd obviously be the same #'s
     
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