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The rate of increase of thermo-emf with ...

The rate of increase of thermo-emf with temperature at the neutral temperature of a thermocouple

A

is positive

B

is zero

C

depends upon the choice of the two materials of the thermocouple

D

is negative

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The rate of reaction increases with temperature due to

Consider the following two statements A and B , and identify the correct choice out of given answers A. Thermo e.m.f. is minimum at neutral temperature of a thermocouple B. When two junctions made of two different metallic wires are maintained at different temperatures, an electric current is generated in the circuit.

Rate of reaction increase with temperature :-

Above neutral temperature, thermo e.m.f. in a thermocouple

Rate of which reaction increase with temperature:

Assertion : When temperature of cold junction of a thermocouple is lowered, the value of neutral temperature of this thermocouple is raised. Reason : When the difference of temperature of two junction is raised, more thermo e.m.f. is produced.

Assertion: When temperature of cold junction of a thermocouple is lowered, the value of neutral temperature of this thermo couple is raised. Reason: When the difference of temperature of two junction is raised. More thermo emf is produced.

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