Today we are discussing the principle of a potentiometer. And also see how a potentiometer works. Before all this, let us know what is potentiator and where do we use it. A potentiometer is a three-terminal resistor having either sliding or rotating contact that forms an adjustable voltage divider. Out of the three terminals - one is varying, whereas the rest two are fixed. The Potentiometer is an electric instrument used to measure the EMF(electromotive force) of a given cell, the internal resistance of a cell. It is the device used to compare the EMF of two cells. It connects with a cell whose emf is known or other supply sources. Comparing an unknown voltage with a known one gives you an unknown voltage. So we got to know what is a potentiometer and we will talk about its use in the last, Now let's see how it works , and what is the principle of a potentiometer More About Potentiometer The potentiometer is also known as an Ideal voltmeter. ...
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