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Mesh-current question

  1. Sep 8, 2014 #1
    1. The problem statement, all variables and given/known data
    Use mesh current to solver for iΔ

    2. Relevant equations
    v1+v2+... vn=0
    i=v/R

    3. The attempt at a solution
    5mA+15.4*i1-5.4i2=0
    9.1*i2+5.42*i1-150iΔ=0

    Now I have two equations and three unknowns and I'm unsure how I should proceed. Also, how do I tell what polarity the individual currents are, assuming my reference is a clockwise voltage?
     
  2. jcsd
  3. Sep 8, 2014 #2
    It would help if you would post a circuit diagram.
     
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