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If each of the resistance in the network...

If each of the resistance in the network in figure `R`, the equivalent resistance between terminals `A` and `B` is

A

`5R`

B

`2R`

C

`4R`

D

`R`

Text Solution

Verified by Experts

The correct Answer is:
D
When cell is connected to points `A` and `B` no current will flow in the resistance of arm `PQ`. Effective resistance of arm `APS` will be in parallel to the total resistance of arm `AQS`.
`:. "Equilvalent resistance"=(2Rxx2R)/(2R+2R)=Romega`
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