question_answer

Three resistors each of 2 ohm are connected together in a triangular shape. The resistance between any two vertices will be [CPMT 1983; MP PET 1990; MP PMT 1993; DCE 2004]

A)                    4/3 ohm

B)                                      3/4 ohm

C)                    3 ohm                              

D)            6 ohm

Correct Answer: A

Solution :

             Equivalent resistance of the combination  \[=\frac{(2+2)\times 2}{2+2+2}=\frac{8}{6}=\frac{4}{3}\Omega \]