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Resonant frequency of a circuit

  1. Apr 29, 2014 #1

    Maylis

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    Gold Member

    Hello, I am working on this circuit to find the resonant frequency.
    ImageUploadedByPhysics Forums1398753368.063181.jpg

    I calculate 10^8 rad/s, but the solution says it's 10^4 rad/s. Here is my work. I just solved for the equivalent impedance, and then separated the j term and solved for the inside of the parenthesis to be equal to zero.

    ImageUploadedByPhysics Forums1398753450.226063.jpg

    Am I wrong or the solution?
    Thank you
     
    Last edited: Apr 29, 2014
  2. jcsd
  3. Apr 29, 2014 #2
    Hey, you should make imaginary part of impedance zero not the whole equation because at resonance the circuit will be purely resistive .......impedance doesnot equal zero
     
  4. Apr 29, 2014 #3

    Maylis

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    Gold Member

    Thank you very much, I solved it now!
     
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