Test Academy | A potentiometer is considered a versatile and accurate device to make an electrical measurement of EMF. Why? As there is no flow of current through the galvanometer, Because the method involves a combination, There are cells involved, Because of potential gradients

Question

A potentiometer is considered a versatile and accurate device to make an electrical measurement of EMF. Why?

Options :

As there is no flow of current through the galvanometer
Because the method involves a combination
There are cells involved
Because of potential gradients

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