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In a potentiometer experiment, the balan...

In a potentiometer experiment, the balancing point with a cell is at a length 240 cm. on shunting the cell with a resistance of `2 Omega ` the balancing length becomes 120 cm. The internal resistance of the cell is

A

`1 Omega `

B

`4 Omega `

C

`0.5 Omega `

D

`2 Omega `

Text Solution

Verified by Experts

The correct Answer is:
D
`r=2 ((240-120)/(120))=2 Omega `
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