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LC Network Help

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:
f0=12πLC f_{0}=\frac{1}{2\pi\sqrt{LC}}

But for part b do I just sub in rL=100 r_{L}=100
into
rD=LrLCr_{D}=\frac{L}{r_{L}C}
Reply 1
Reply 2
For each question I get:

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

Is this right?

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