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Nodal Analysis Help, 1 equation 2 unknowns

  1. May 29, 2013 #1
    1. XNB8udn.png



    2. V=IR, Nodal analysis



    3. Based on where I have drawn my ground, V2=-10V, V1=3I. From this I should just have 1 equation with 1 unknown (if I have done this correct). My KCL equation for node V1 is (V3+10)/8 + (V3-3I)/2 + V3/12. I am stuck, I need to find an equation for I in terms of V3.
     
    Last edited: May 29, 2013
  2. jcsd
  3. May 29, 2013 #2

    gneill

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    Staff: Mentor

    If you assume the potential at v3 is, well, v3, then what's the current through the 12Ω resistor?
     
  4. May 29, 2013 #3
    Oh wow, I=V3/12
     
  5. May 29, 2013 #4

    gneill

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    Staff: Mentor

    Watch the sign...
     
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