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Complex power

  1. Jul 2, 2010 #1


    complex power = P+jQ

    am i to assume that complex power is a phasor representation of the last two terms? why does this formula ignore the first term?
  2. jcsd
  3. Jul 2, 2010 #2
    and aparently it is also equal to

    complex power =(Veff)(Ieff)

    which is a scalar, but its also equal to

    complex power=(Vphasor)(Iphasor)/2

    which is a phasor

    how can complex power be both a phasor and a scaler?
  4. Jul 2, 2010 #3


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    Please give this a read and see if it answers your question. I think it's good.
    http://hyperphysics.phy-astr.gsu.edu/hbase/electric/powerac.html" [Broken]
    Last edited by a moderator: May 4, 2017
  5. Jul 2, 2010 #4
    it did! tyvm!
  6. Jul 4, 2010 #5


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    Surely Electrical Power is the Dot Produce between the V and I vectors. A dot product is a scalar.
    What could "jQ" be? I and V may not be in phase but what has that to do with "complex power"? Is there some problem with actual terminology here?
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