question_answer

Twelve wires of equal length and same cross-section are connected in the form of a cube. If the resistance of each of the wires is \[R\], then the effective resistance between the two diagonal ends would be                                           [J & K CET 2004]

A)            2\[R\]

B)            12\[R\]

C)            \[\frac{5}{6}R\]

D)            8\[R\]

Correct Answer: C

Solution :

                   The given circuit can be simplified as follows \\[{{R}_{AD}}=\frac{5R}{6}\]