Resonant frequency of a circuit

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  • Thread starter gfd43tg
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  • #1
gfd43tg
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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
 
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Answers and Replies

  • #2
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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
 
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  • #3
gfd43tg
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Thank you very much, I solved it now!
 

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