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A potentiometer wire AB having length L ...

A potentiometer wire AB having length L and resistance 12 r is joined to a cell D of emf `epsi//2` and internal resistance 3r is connected. The length AJ at which the galvanometer as shown in fig. Shows no deflection is :

A

`5/12L`

B

`11/24L`

C

`11/12L`

D

`13/24L`

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The correct Answer is:
D
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