Question

find the equivalent resistance in the figure(picture)

Answer 1

Both the parts above and below AB are in series so add them.
Our qn becomes 2 resistances of 12 ohm in parallel.
let the equivalent resist. be R.
1/R=1/12+1/12
1/R=1/6
R=6
so equivalent resist. =6 ohm.
done.
feel free to ask any doubt.