question_answer

Five resistances are connected as shown in the figure. The effective resistance between the points A and B is                                                [MP PMT 1999; KCET 2001; BHU 2001, 05]

A)         \[\frac{10}{3}\Omega \]

B)         \[\frac{20}{3}\Omega \]  

C)                    \[15\,\Omega \]

D)                    \[6\,\Omega \]

Correct Answer: A

Solution :

                                         The given circuit is a balanced Wheatstone bridge type, hence it can be simplified as follows