In a potentiometer experiment, the galvanometer shows no deflection when a cell is connected across 60 cm of the potentiometer wire. If the cell is shunted by a resistance of 6 Ω, the balance is obtained across 50 cm of the wire. The internal resistance of the cell is
Text Solution
Verified by ExpertsThe correct answer is:
C
For potentiometer, the internal resistance r, is given by
Given, 
,
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