Join TSR now and get all your revision questions answeredSign up now

LC Network Help

    • Thread Starter
    Offline

    3
    ReputationRep:
    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}
    • Thread Starter
    Offline

    3
    ReputationRep:
    Name:  ImageUploadedByStudent Room1474811258.945326.jpg
Views: 21
Size:  139.1 KB

    Picture


    Posted from TSR Mobile
    • Thread Starter
    Offline

    3
    ReputationRep:
    For each question I get:

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

    Is this right?
 
 
 
Poll
Which party will you be voting for in the General Election 2017?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.