question_answer

In the given circuit all resistances are of value \[R\] ohm each. The equivalent resistance between \[A\] and \[B\] is:                                                                                                                        [JEE Online 15-04-2018]

A) \[2R\]                          

B) \[\frac{5R}{2}\]                     

C) \[\frac{5R}{3}\]                                 

D) \[3R\]

Correct Answer: A

Solution :

Point 1, 2, 3 and 4 are same potential (shot circuited), hence equivalent resistance becomes \[{{R}_{Eq}}=R+R=2R\]