Transients

Discussion in 'Homework Help' started by stobbz, Jan 12, 2011.

  1. stobbz

    Thread Starter New Member

    Jan 7, 2011
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    0
    Regarding a DC circuit with a capacitor.
    I have obtained an expression for the capacitor voltage:

    Vc(t) = 4 + 2e^-150t

    How do determine the capacitor current?

    I know that i = C * dv/dt, but not sure how to apply it.

    Any tips?
     
  2. Georacer

    Moderator

    Nov 25, 2009
    5,142
    1,266
    As the formula suggests, differentiate the voltage to get to the current.
    Namely:  i=C\cdot \frac{d(4+2e^{-150t})}{dt}. Can you handle that?
     
  3. stobbz

    Thread Starter New Member

    Jan 7, 2011
    7
    0
    Just about
     
  4. Georacer

    Moderator

    Nov 25, 2009
    5,142
    1,266
    Glad to hear so!
     
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