question_answer

A uniform wire of \[16\,\Omega \] is made into the form of a square. Two opposite corners of the square are connected by a wire of resistance \[16\,\Omega \]. The effective resistance between the other two opposite corners is                                                                   [EAMCET (Med.) 1995]

A)                    \[32\,\Omega \]

B)                                      \[20\,\Omega \]

C)                    \[8\,\Omega \]            

D)            \[4\,\Omega \]

Correct Answer: D

Solution :

             According to the principle of Wheatstone?s bridge, the effective resistance between the given points is 4W.