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Homework Help: Really stuck

  1. May 12, 2005 #1


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    -A transmission line has a resistance of 5 ohms. Calculate the power loss in the line when 10 000 kW are transmitted at 10 kV...

    I don't know where to start, what formula am I supposed to use? I'm sure the second I find out its gonna be soo easy, but any help would be apreciated.

    Thanks in Advance
  2. jcsd
  3. May 12, 2005 #2

    Andrew Mason

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    [tex]P = VI = I^2R[/tex] where V is the voltage drop over the transmission line and I is the current it conducts, and R is the resistance of the line.
    What is the current if the 10 kV line is conducting 10,000 kW (that is just P = VI)?

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