Finding the Req seen by the inductor

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de1337ed

Joined Mar 6, 2011
23
I'm having a little trouble finding equivalent resistances seen by certain energy storage devices. I have the following Problem:


I want to find the equivalent resistance seen by the inductor, so I remade the circuit in the following fashion:


From what it looked like to me, it seemed as though the two resistors are in parallel when seen by the inductor, and as a result, the Req = 9/4 Ω. (9Ω||3Ω).

Is this correct? I need to use this value to calculate τ for my problem. Thank you.
 
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