Question

10. Describe a method of measuring the thermo emf
using potentiometer.​

Answer 1

Measurement of emf by Potentiometer:

• For measurement of a cell’s emf, potentiometer is commonly used

• In potentiometer, no current is flowing.

• It works a null method of measuring potential difference, so that when a balance is extended and the reading is being taken, no current is drawn to be measured.

Principle of Potentiometer:

Potentiometer functions on the principle that when a continuous current flows through a wire of uniform cross sectional area, potential difference in the middle of its two points is directly proportional to the L of the wire in the middle of the two points.

Hope it helped............

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https://brainly.in/question/1051395 What is potentiometer?