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Can someone please explain a step to a solution? It's about nodal analysis

  1. Oct 3, 2011 #1
    1. The problem statement, all variables and given/known data


    2. Relevant equations

    V=IR, Nodal Analysis

    3. The attempt at a solution

    1 and 2 in the diagram are the nodal equations. Considering that the left node is V1 and that the right node is V2. I don't know how to get from the nodal equations to step 3. I know that you go from step 3 to step 4 using V=IR.

    I tried solving the nodal equations to get to step 3...

    Can someone please work it out for me? Thank you

    Please help
  2. jcsd
  3. Oct 3, 2011 #2


    User Avatar
    Gold Member

    I assume from the picture that the 1kR label next to the 10kR on the left should actually be the resistance of the 2mA current source, which is interesting, since by Ohms Law the voltage across it would then be 2V, as shown by the 1st equation current of -2/K, yet this voltage is not V1 ... somehow, despite sharing terminals ... ?

    Anyway, you know what the voltage and resistance are for Ix, so substitute that in and then do the algebra (solving simultaneous equations) and you should get the value for V2.
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