# Find the resistance of the wire frame shaped as a cube when measured between the points 1 and 2. The resistance of each edge is R

$\begin {array} {1 1} (A)\;\large\frac{R}{7} & \quad (B)\;\large\frac{11R}{12} \\ (C)\;\large\frac{7R}{12} & \quad (D)\;\large\frac{4R}{9} \end {array}$

The potential diagram after identifying the equipotential points is as follows.
Here, each connections represent a resistance of R
The equivalent resistance on simplifying comes out to be $\large\frac{7R}{12}$
Ans : (C)
edited Mar 14, 2014