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In a potentiometer experiment the balanc...

In a potentiometer experiment the balancing length with a cell is 560 cm. When an external resistance of `10Omega` is connected in parallel to the cell, the balancing length changes by 60 cm. Find the internal resistance of the cell.

A

3.6

B

2.4

C

1.2

D

0.6

Text Solution

Verified by Experts

The correct Answer is:
C
`r=R[(l_(1)-l_(2))/(l_(2))]`
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