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Homework Help: Inductor Circuit, separation of variables

  1. Oct 17, 2012 #1


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    Gold Member

    1. The problem statement, all variables and given/known data


    V_o varies as V(t) = 2000e^(-100t) volts for t > 0

    i1(0) = -6A
    i2(0) = 1A
    i0(0) = 5A

    Find i0(t) for t > 0.

    I found Leq = 4H

    V(t) = L di/dt

    I separated variables and integrated, got 5e^(-100t)

    but the software is telling me it's wrong... supposedly the answer is 5e^(-.1t) and I'm not exactly sure how....


    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Oct 18, 2012 #2


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    Science Advisor

    They change the units of "t" to milliseconds. Their answer should have specified the units if not using SI.
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