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3. First I found i(0)

the equation for a source free RL circuit is

i(t) = i(0)e^(-t)/T

T = L/Req

Since the inductor will be shorted when t<0, i(0) must be 5mA.

Now to find Req I added series and parallel appropriately to find

Req = 3/4k Ohms

so my equation is

i(t)= (5x10^-3)e^(-t)/T

where T = (1x10^-3)/(3/4x10^3)

can someone please check that, Thanks!

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# Homework Help: Finding i(t) (Source Free RL Circuit)

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