(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

http://img828.imageshack.us/img828/1149/70833278.jpg [Broken]

Now this is a part of the solution that was given I was having difficulty understanding.

3. The attempt at a solution

i(0) = 0 - understood

u(t -1) for 0 < t < 1 = 0

I can understand why the voltage from this source would be zero for that time period.

For any time t > 0 -> u(t) = 1, so V = 1

1) By i(∞) do they mean for the 0 < t < 1 period? So current just before t = 1? If so,

a) How is i(∞) = [itex]\frac{1}{6}[/itex]? There's also a 3Ω resistor in there, why is that being ignored? Is it because for i(∞), the inductor is considered to be acting like a short-circuit thereby implying the current has to flow through 6Ω resistor, but ignores the 3Ω due to the path of least resistance?

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# Homework Help: RL circuits and unit step functions

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