question_answer

Five equal resistors, each equal to r are connected as shown in the figure, then the equivalent resistance between points A and B

A)  r                                            

B)  5r

C) \[\frac{r}{5}\]                                   

D)  \[\frac{2r}{3}\]

Correct Answer: A

Solution :

The given figure is balanced wheat stone bridge The effective resistance is r.