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RL Circuits problem

  1. Dec 6, 2011 #1
    1. The problem statement, all variables and given/known data
    For the circuit shown, find i(t) for t>0
    http://img440.imageshack.us/img440/5158/cicuit.jpg [Broken]



    2. Relevant equations
    To simplify the resistors we use a Wye-Delta transform so:
    R1 = RbRc/(Ra+Rb+Rc)
    R2 = RcRa/(Ra+Rb+Rc)
    R3 = RaRb/(Ra+Rb+Rc)

    Then the Kirchoff current law on the nodes to calculate i(o).


    3. The attempt at a solution

    I can do the Wye-Delta transform no problem, but am having serious trouble in calculating i(o). After that it's a fairly straightforward problem.

    Any help would be massively appreciated!
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
    Last edited by a moderator: May 5, 2017
  2. jcsd
  3. Dec 6, 2011 #2

    gneill

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    Staff: Mentor

    What have you tried? What's giving you trouble?
     
  4. Dec 6, 2011 #3

    NascentOxygen

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    Staff: Mentor

    Will you be determining a differential equation, then solving it, to find the transient current through the inductor? Or what method will you be using?
     
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