In a potentiometer, the balancing length of a cell of emf 10 volt is 120 cm. What will be the balancing length of potentiometer wire for a 8 volt cell?

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82 cm

88 cm

104 cm

96 cm

answer is D.

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Detailed Solution

For potentiometer the balancing length is proportional to emf in the secondary circuit810=x120⇒x=96 cm

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