question_answer

Find the equivalent resistance between the points a and b                                                                             [BHU 2003; CPMT 2004]

A)         2 W

B)         4 W

C)         8 W

D)         16 W

Correct Answer: B

Solution :

                                         Given circuit is a balanced Wheatstone bridge circuit, hence it can be redrawn as follows \[{{R}_{AB}}=\frac{12\times 6}{(12+6)}=4\Omega \].