Question

explain principle of potentiometer .find out the internal resistance of a cell using potentiometer.​

Answer 1

Explanation:

Potentiometer is a device used to measure the internal resistance of a cell, to compare the e.m.f. of two cells and potential difference across a resistor. It consists of a long wire of uniform cross sectional area and of 10 m in length. The wires are joined in series by using thick copper strips. ..

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