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In the petentiometer arrangemeter shown,...

In the petentiometer arrangemeter shown, the driving cell `A` has emf `epsilon` and internal resistance `r`. The emf of the cell `B` is `(epsilon)/(2)` and internal resistance `2r`. The petentiometer wire `CD` is `100 cm` long. If balance is obtained with length `CJ = l`, then

A

`l=50cm`

B

`l gt 50cm`

C

Balance will be obtaine donly if resistance of `AB` is `gtr`

D

Balance cannot be obtained.

Text Solution

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The correct Answer is:
B, C
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