LC Network Help

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    Hi everyone,

    I am currently solving a problem involving an LC network. The network is made from an inductor of 10mH and a capacitor of 1nF in parallel in an AC network with a resistor of resistance 10k in series with it.

    a) Find the resonant frequency.
    b) Calculate the dynamic resistance at resonance, assume the inductor has dc resistance 100

    I can find the resonant frequency using the equation:
     f_{0}=\frac{1}{2\pi\sqrt{LC}}

    But for part b do I just sub in  r_{L}=100
    into
    r_{D}=\frac{L}{r_{L}C}
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    For each question I get:

    10) 50.3kHz
    11) 100k
    12) 0.91V

    Is this right?
 
 
 
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