Question

Why in thermocouple emf increases with increase in temperature?

Answer 1

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$\huge\underline\red{\mathfrak{Answer}}$

✔️The thermo emf increases if the temperature of the hot junction is increased and the cold junction is kept constant.

The thermo emf increases if the temperature of the hot junction is increased and the cold junction is kept constant. In order to understand this concept, consider a copper-iron thermocouple with one junction (P) placed in hot oil bath and the other (Q) kept in ice. A sensitive galvanometer (G) is introduced in the circuit. A thermometer (T) is placed in the hot oil bath. The deflection in the galvanometer measures the thermo emf.

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Answer 2

Answer

✔️The thermo emf increases if the temperature of the hot junction is increased and the cold junction is kept constant.

The thermo emf increases if the temperature of the hot junction is increased and the cold junction is kept constant. In order to understand this concept, consider a copper-iron thermocouple with one junction (P) placed in hot oil bath and the other (Q) kept in ice. A sensitive galvanometer (G) is introduced in the circuit. A thermometer (T) is placed in the hot oil bath. The deflection in the galvanometer measures the thermo emf..