Question

Slate and explain portentiomete
Principle​

Answer 1

Answer:

The principle of a potentiometer is that the potential dropped across a segment of a wire of uniform cross-section carrying a constant current is directly proportional to its length. Thepotentiometer is a simple device used to measure the electrical potentials (or compare the e.m.f of a cell).

Answer 2

Explanation:

A potentiometer is an instrument for measuring voltage or 'potential difference' by comparison of an unknown voltage with a known reference voltage. If a sensitive indicating instrument is used, very little current is drawn from the source of the unknown voltage. Since the reference voltage can be produced from an accurately calibrated voltage divider, a potentiometer can provide high precision in measurement.

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