Question

Which material is used for the potentiometer wire and why how can the sensitivity of a potentiometer be increased?

Answer 1

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• Material used for the potentiometer wire is mainly Mangnese and it's alloys

• The alloys Constantan and Manganin are traditionally used for the coils in resistance boxes, for rheostats and for the wires in potentiometers and metre bridges in the laboratory.

• They have high resistivity and low temperature coefficient of resistance, both of which make them suitable for the purpose.

Sensitivity of potentiometer can be increased by......

• Increasing the length of the potentiometer wire and

• By reducing the current in the circuit by using a rheostat.

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