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Homework Help: Impedance and Admittance: Find the current given an RLC circuit w/ Vs = 50cos(200t) V

  1. Apr 3, 2007 #1
    Impedance and Admittance: Find Vs given Io in a circuit with 2 caps,2 inductors,2res

    1. The problem statement, all variables and given/known data

    Find [itex]V_s[/itex] if [itex]I_0\,=\,2\angle0\deg[/itex] A.

    http://img237.imageshack.us/img237/6291/problem954zz0.jpg [Broken]

    2. Relevant equations

    KCL, KVL

    3. The attempt at a solution

    I made a new diagram:

    http://img201.imageshack.us/img201/9359/problem954part2gz3.jpg [Broken]

    But how do I combine the left hand equivalent impedance, so that the final circuit to work on would be this:

    http://img201.imageshack.us/img201/1690/problem954part3fj1.jpg [Broken]


    Figuring [itex]V_o[/itex]:





    I need this to find [itex]V_s[/itex].


    How do I finish? Please help!!!
    Last edited by a moderator: May 2, 2017
  2. jcsd
  3. Apr 4, 2007 #2
    I did the calculations and conversions of complex rectangular to polar and got this as a final answer:


    Does that look right?
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