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  • As shown in the figure, the ends of eight identical resistors, each having resistance r are connected to a point O & the other ends are connected to a circular conductor. The equivalent resista

As shown in the figure, the ends of eight identical resistors, each having resistance r are connected to a point O & the other ends are connected to a circular conductor. The equivalent resistance between O & P is equal to

 

Option: 1

8 r 


Option: 2

Zero
 


Option: 3

r/8


Option: 4

none of these


Answers (1)

best_answer

Since one of the ends of all the resistors are connected (short circuited) with a zero
resistance wire. These ends are in same potential.
\Rightarrow all the resistors are in parallel

\Rightarrow r_{\text {effective }}=r_{\text {op }}=r / 8

Posted by

Deependra Verma

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