Physics, asked by shamina, 1 year ago

Superiority of potentiometer over voltmeter?

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Answered by mannu4112
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Answered by champ22
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Hey mate

Here is ur answer

A potentiometer is a versatile device. It can be used for various purposes unlike voletmeter which is only used to measure potential difference. A potentiometer measures the emf of a cell very accurately. It is based on null deflection method. While measuring it does not draw current from the source of unknown emf. Whereas a classical volmeter draws some current, so it measures potential approximately(not accurately). In other words a potentiometer measures the actual emf of cell wheareas a voltmeter measures its terminal potential difference. The sensitivity of potentiometer is also very high. It can measure potential differences much smaller than voltmeters.
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