Treating an inductor as a current source?

[anon1111112]

https://imgur.com/a/Yb2vpmp

why can the inductor be treated as a 1A source?

 

[cnh1995]

https://imgur.com/a/Yb2vpmp

why can the inductor be treated as a 1A source?

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[berkeman]

https://imgur.com/a/Yb2vpmp

why can the inductor be treated as a 1A source?

View attachment 226325

Welcome to the PF.

Can you post the original circuit for the problem? Is it just the source voltage and R1 with an inductor in series? Or is there more to it?

And can you describe how you arrived at your first and second equivalent circuits?