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Capacitors and half life time

  1. Apr 11, 2009 #1
    1. The problem statement, all variables and given/known data

    If I have a circuit in which the capacitor is the large disk device and for each value of separation=d, calculate the half-life of exponential decay?

    2. Relevant equations



    3. The attempt at a solution

    What is the formula to do this?
     
  2. jcsd
  3. Apr 11, 2009 #2

    rl.bhat

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    Homework Helper

    Formula for exponential decay is Q = Qo*e^-t/RC
    At half life Q = Qo/2.Substitute this value in the above expression. Take the logarithm and substitute C = epsilon(not)*A/d.Then write down the expression for T1/2.
     
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