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Homework Help: Node Voltage analysis- electrical engineering

  1. Mar 31, 2010 #1
    http://i39.tinypic.com/28akmfk.jpg


    Ultimately, I am trying to find power dissipated by each resistor.

    I already applied node voltage analysis to the circuit.

    The picture shows the diagram of the problem and my attempted solution/ equations I came up with. In the diagram, I labeled the nodes and reference node. All else was given in the diagram.

    Please let me know what the next step is in order to find power dissipated by each resistor,
    or if my equations for node voltage are not correct.

    Thank you in advance.
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Mar 31, 2010 #2

    Filip Larsen

    User Avatar
    Gold Member

    If you have the potential over each resistor there is a very simply relationship that determines the power.
     
    Last edited: Mar 31, 2010
  4. Mar 31, 2010 #3
    can you explain please?
    i know that power P= current(I) x Voltage (V)

    which v and I should i use?
     
  5. Mar 31, 2010 #4

    Filip Larsen

    User Avatar
    Gold Member

    Try combine the power equation you gave last with Ohm's law.
     
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