For the post office arrangement to deter...

For the post office arrangement to determine the value of unknown resistance, the unknown resistance should be connected between.

`B^(1)` and `C^(1)`

`A` and `D`

`C` and D

B and D

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Verified by Experts

The correct Answer is:

Total external resistance will be total resistance of the whole length of box. It should be connected between A and D, hence correct option is (b)

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