1.

What is potentio meter nd its principal in brief? ​

Answer»

The Potentiometer is an electric instrument that used to measure the EMF (electro MOTIVE force) of a given cell, the internal resistance of a cell. And also it is used to COMPARE EMFs of different CELLS. It can also use as a variable resistor in most of the applicationsThe potentiometer is a simple DEVICE used to measure the electrical potentials (or compare the e.m.f of a cell). One form of potentiometer is a uniform high-resistance wire attached to an insulating support, marked with a LINEAR measuring scale.



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