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Ampere-Maxwell Law

  1. Feb 27, 2010 #1
    Hello to all. I am looking at an example in my book (again. =O)

    The example has two metal cylinders with a distance, d between them

    The problem states that a voltage V(t) is applied between the plates.

    What do they mean by that?

    (I thought it was an oscillating voltage, since they have a sin(kt) term in the V(t) equation. Is that different from the capacitor being charged at a constant rate by a steady current).
     
  2. jcsd
  3. Feb 27, 2010 #2
    Recall that the charge Q in a cylindrical capacitor is

    Q(t) = C·V(t)

    where C is the capacitance and V(t) is the applied voltage. differentiating, we get the current I(t):

    I(t) = C·dV(t)/dt

    Bob S
     
  4. Feb 28, 2010 #3
    I see. Thanks
     
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