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Homework Help: Half life of capacitor

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

    http://img5.imageshack.us/img5/8553/halflifei.th.jpg [Broken]

    I need to find the half life time of a capacitor and the equation is above.. I know what C is but I don't know R.. is there a way to calculate R in this case?

    2. Relevant equations

    3. The attempt at a solution
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Apr 11, 2009 #2


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    Homework Helper

    Unfortunately you need RC to determine time. With a tiny resistance it will be smaller than with a larger resistance. Without more information, you can only determine t in terms of R.
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