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Homework Help: Nodal analysis

  1. Apr 3, 2008 #1
    Hey guys. I have attached a circuit that i am trying to analyse using nodal analysis.
    This is how i am doing it:

    at node 2:
    (v2-v1)/1 + v2/4 + (v2-v3)/1 = 0

    at node 3:

    (v3-v2)/1 + v3/2 = 4A

    at node 1:

    v1/25 = 2A

    but i am not getting the right results for v1, v2 and v3.

    Can anyone point out what i am doing wrong?


    Attached Files:

  2. jcsd
  3. Apr 4, 2008 #2
    Looks like you are given conductance of the resistors rather the resistance in ohms.
  4. Apr 4, 2008 #3
    i have asked about that and it is suppose to be ohm not s
  5. Jul 19, 2010 #4
    If your node 3 is at v_3, then where 3i_0 is in the equation?For the node 3, I would write the equation like 3i_0+4A=(v_3-v_2/1s)+v_3/2s. I think you may have missed the 3i_0 in your equation.
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