calculate the power absorbed

Discussion in 'Homework Help' started by kd3041, Feb 2, 2011.

  1. kd3041

    Thread Starter New Member

    Feb 2, 2011
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    Hi guys. I have a problem of calculate p1 in this question. p4=4x20=80W
    p3=4x12=48W. p2=8x6=48W but how do you calculate p1? Theres only dependent current of 2 A known. Thanks
     
  2. Georacer

    Moderator

    Nov 25, 2009
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    The diagram can tell you the value of I, as well as the voltage applied on the source P1. It just does that indirectly. Can you see it?

    Hint: these quantities are defined by other sources.
     
  3. kd3041

    Thread Starter New Member

    Feb 2, 2011
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    is it 8V cos the current source is in parallel with the 8V
     
  4. Georacer

    Moderator

    Nov 25, 2009
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    Yes. How about the current I. Can you find it?
     
  5. kd3041

    Thread Starter New Member

    Feb 2, 2011
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    yh 2 A. Thanks
     
  6. Georacer

    Moderator

    Nov 25, 2009
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    Exactly. I is the same as the current flowing through source 4, as they are in the same branch. Thus the current through source 1 is 0.5I=2A.
     
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