question_answer

In the circuit shown, the value of each resistance is r, then equivalent resistance of circuit between points A and B will be                                               [Similar to CBSE PMT 1999; RPET 1999]

A)            (4/3) r

B)            3r / 2

C)            r / 3

D)            8r / 7

Correct Answer: D

Solution :

                   The given circuit can be simplified as follows.