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Q.

Sensitivity of potentiometer can be increased by

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a

by decreasing the series resistance connected with the potentiometer

b

decreasing the length of the potentiometer wire

c

increasing the length of the potentiometer wire

d

increasing the e.m.f. of the cell

answer is B.

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Detailed Solution

The sensitivity of potentiometer can be increased by decreasing the potential gradient, i.e., by increasing the length of potentiometer wire.

Sensitivity ∝  1Potential gradient ∝  Length

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