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Homework Help: Mesh Current Analysis w/ Controlled Current Source

  1. Oct 4, 2012 #1
    Solve i_x when a=2. (See attached picture)

    This is my attempt (mesh current analysis):

    I made i1 be the lower left loop current.
    I made i2 be the lower right loop current.
    I made i3 be the upper loop current.

    Mesh1: i1 = 2ix

    Mesh2: -10 + 3(i2-i3) + 20i2 = 0

    Mesh3: -5 + 3(i3 - i2) + 10(i3-i1) = 0

    Also: ix = i3 - i2 => -i1 - 2i2 + 2i3 = 0

    Using those last three equations: i1=0, i2=.5, i3=.5

    I don't think that i1 can be 0... and I can't figure out any place I went wrong; it seems pretty straightforward?

    Thank you very much for your help!

    Attached Files:

  2. jcsd
  3. Oct 5, 2012 #2


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    Staff: Mentor

    There's no reason why i1 (and hence Ix) cannot be zero. Your solution looks okay to me.
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