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Homework Help: Capacitors/Resistors/time constant current

  1. Jun 6, 2009 #1
    1. The problem statement, all variables and given/known data


    The given pair of capacitors in the figure below are fully charged by a 14.0 V battery. The battery is disconnected and the circuit closed. Answer the following after the circuit has been closed for 1.80 ms.

    2. Relevant equations


    3. The attempt at a solution

    I know we have to at least use the second equation above but I just don't know how to start this problem.

    Attached Files:

  2. jcsd
  3. Jun 6, 2009 #2
    whoops! Forgot the include the questions in the post, haha:

    a) How much charge remains on each capcitor (3 and 2 microF)?

    b) What is the current in the resistor?

    Thanks guys.
  4. Jun 7, 2009 #3


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    Staff Emeritus
    Science Advisor
    Homework Helper

    What is the effective capacitance, which you can use in place of the two capacitors?
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