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I'm having trouble finding the norton equivalent resistance for the attached circuit.

I reasoned that once you short the source, you just get the (3ohm+2ohm) in parallel with the 4ohm resistor.

However the answer i'm getting is not the one given in the book (I get 2.22ohms, when it should be 2ohms). Apparently the 3ohm and the 6ohm resistor are in parallel, I just can't see how. If anyone can guide me through it, you would be doing me a huge favor!

Thanks

I reasoned that once you short the source, you just get the (3ohm+2ohm) in parallel with the 4ohm resistor.

However the answer i'm getting is not the one given in the book (I get 2.22ohms, when it should be 2ohms). Apparently the 3ohm and the 6ohm resistor are in parallel, I just can't see how. If anyone can guide me through it, you would be doing me a huge favor!

Thanks