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Damoed Oscillation in an RLC circuit

  1. May 3, 2010 #1
    1. The problem statement, all variables and given/known data
    A single loop circuit consists of a 7.2 ohm resistor, a 12.0 H inductor, and a 3.20*10^-6 F capacitor. Initially the Capacitor has a charge of 6.20*10^-6 C and the current is zero. Find the charge on the capacitor N complete cycles later for a) N=5, b) N=10, and c) N=100.

    2. Relevant equations
    q=Qe^(-Rt/2L)cos(wt + p), where p is the phase constant and w is the angular frequency.


    3. The attempt at a solution
    I can't figure out how to solve this considering i'm given a # of complete cycles and I can't convert it to time. Sorry if i'm being dumb, i've been working on the same type of stuff for several hours now.
     
  2. jcsd
  3. May 4, 2010 #2

    ehild

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    What is angular frequency? How is related the angular frequency to L, C, and R?

    ehild
     
  4. May 4, 2010 #3
    After you find the angular frequency, how is it related to the time it takes the system to go through one cycle?
     
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