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RC circuit lab problem

  1. Feb 20, 2009 #1
    1. The problem statement, all variables and given/known data

    I did the RC circuit lab
    I measure the actual resistance of 1000Ω
    Function Generator Resistance: 50 Ω
    Function Generator Frequency: 1.4Hz

    resistor used was 41uF in C1
    Resistor used was 22uf for c2

    So i have to find c1, c2 and use c1,c2 to calc. the total capacitance for series/parallel

    Half Life:
    C1: 1.200 milli sec
    C2: 0.600 milli sec
    Series C1, C2: 1.400 millisec
    Parallel C1,C2: 2.000 millisec

    2. Relevant equations

    C= (t 1/2)/ Rln2

    3. The attempt at a solution

    C1: ( 1.200e-3)/ 50Ω * ln2 = 3.46E-5
    C2: (.600 e-3)/ 50Ω* ln2= 1.73e-5

    for parallel/ series capacitors, i'm not sure where to continue.

    is it add up the c1 and c2 and thats my series capacitance? and 1/c1 +1/c2= my parallel capacitance?
  2. jcsd
  3. Feb 20, 2009 #2


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    Science Advisor
    Homework Helper

    Re: Lab

    Use c = c1+c2 if they are in parallel.
    Use 1/c = 1/c1 + 1/c2 if they are in series.
  4. Feb 20, 2009 #3
    Re: Lab

    once i used my solve individual C's to solve in the series/ parallel then i'm done right?
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