what is potentiometer and it's principle..?
Answer (1)
13th May, 2021
Hi there,
Hope you are doing, well these days,
A potentiometer is a device that is used to compare the emf (electromotive force) of two given primary cell, which is Daniel cell and leclanche cell.
Principle- when current flows constantly and the cross section area is uniform then the potential drop accross any length of the wire is directly proportional to that length.
E1/E2=L1/L2
Where L1 and L2 are the balancing lenth.
Hope this answer helps you! :)
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