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In Wheatstone network, P=2Omega,Q=2 Omeg...

In Wheatstone network, `P=2Omega`,`Q=2 Omega`,`R=2Omega` and `S = 3 Omega`. The resistance with which is to be shunted in order that the bridge may be balanced is:

A

`4Omega`

B

`1Omega`

C

`6Omega`

D

`2Omega`

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