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Homework Help: RLC circuit

  1. Mar 24, 2006 #1
    I dont really get this problem. Can I have some suggestion please?

    The 3-mF capacitor of an RLC circuit is initially charged to 30 micronC.
    The 1.5-mH inductor has a very small resistance.At particular instant, after 100 oscillations, the current through the inductor is zero while the capacitor is still charged at 5 micronC.
    1- What is the resistance of the circuit?
    2- what are the energies of the circuit before and after 100 oscillations?

    Please Can I have some help so I can start?

    thank you very much
  2. jcsd
  3. Mar 24, 2006 #2

    Tom Mattson

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    It really would be best if you started it yourself. What do you have to work with? What do the relevant sections in your textbook say? Is this a series RLC circuit, or a parallel RLC circuit? Also, do you have an expression for any of the following quantities for your circuit?

    * [itex]q_C(t)[/itex], the charge held by the capacitor
    * [itex]v_C(t)[/itex], the voltage across the capacitor
    * [itex]i_L(t)[/itex], the current through the inductor

    Once you have one of the above you can use the given information to find the requested information.
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