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(B) The sensitivity of a potentiometer is defined as the smallest potential difference that can be measured by it.Sensitivity is inversely proportiona

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Increasing the length of the potentiometer wire

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(B) The sensitivity of a potentiometer is defined as the smallest potential difference that can be measured by it.Sensitivity is inversely proportional to the potential gradient $(x)$.Potential gradient $x = \frac{V}{L}$,where $V$ is the potential difference across the wire and $L$ is the length of the wire.To increase sensitivity,the potential gradient $(x)$ must be decreased.Since $x = \frac{V}{L}$,decreasing $x$ can be achieved by increasing the length $(L)$ of the potentiometer wire for a constant potential difference $V$.Therefore,increasing the length of the potentiometer wire increases its sensitivity.

Sensitivity of a potentiometer can be increased by

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