In the network shown below in the figure below, each resistance is $2Ω$. The effective resistance between A and B would be:

$\frac{4}{3}Ω$

ACDEA is a wheatstone bridge. hence its equivalent resistance is $ R = \frac{4\times 4}{4+4} = 2\Omega$

Now $2\Omega$ and $2\Omega$ are in series and then $4\Omega$ is in parallel with $2\Omega$.

$R_{eq} = \frac{2\times 4}{2+4} = \frac{4}{3} \Omega$

The correct answer is Option (2) → $\frac{4}{3}Ω$