# The equivalent resistance between the points A and B is

$\begin{array}{1 1} (A)\;\large\frac{R}{2} & \quad (B)\;\large\frac{R}{4} \\ (C)\;R & \quad (D)\;\large\frac{R}{8} \end{array}$

Here, the complicated looking circuit can be simplified by
labelling appropriate potential points as follows.
The circuit can be simplified as shown
The simplification shows that the effective resistance is $\large\frac{R}{2}$
edited Mar 14, 2014