correct answer

Discussion in 'Homework Help' started by mary_owen, May 11, 2008.

  1. mary_owen

    Thread Starter New Member

    Apr 30, 2008
    5
    0
    hi guys. ive just answered this question and just wondering if part b) is the right answer. many thanks .



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  2. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    The time constant before you connect the resistor is 0 (if the source has 0 internal resistance). After you connect the resistor the voltage on the capacitor wont change so you dont need to calculate a time constant.

    The current through the resistor is constant all the time after it is connected (if the problem is that what states) and will be 100/50000
     
  3. brwallis

    New Member

    May 15, 2008
    1
    0
    As I read the problem, the capacitor and resistor are added at the same time. If so, the capacitor should act like a short passing all the current in the circuit with nothing through the resistor until such time as the cap begins to charge.
     
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