Question

Question #461fe

Answer 1

Hi, I finally managed (with some help) to get it!!!...I think!

Explanation:

I changed a bit (to see it more clearly):

So I have:

First bump from A to 1:
Parallel R1 and R2`=(2*2)/(2+2)=1Omega`

Second bump from 1 to B:
Parallel R3 and R4`=1 Omega` again;
Series betwen (parallel R3 and R4) and R5`=1+3=4Omega`
Parallel of the above with R6`=(4*4)/(4+4)=2Omega`

Finally:
series bump1 and bump2`=1+2=3Omega`

...does it make sense?