Home
Class 12
PHYSICS
At neutral temperature, the thermoelectr...

At neutral temperature, the thermoelectric power `((dE)/(dT))` has the value

A

Zero

B

Maximum but negative

C

Maximum but positive

D

Minimum but positive

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • HEATING AND CHEMICAL EFFECT OF CURRENT

    ERRORLESS |Exercise Heating Effect of Current|2 Videos

  • HEATING AND CHEMICAL EFFECT OF CURRENT

    ERRORLESS |Exercise Chemical Effect Current|1 Videos

  • ELECTROSTATICS

    ERRORLESS |Exercise Ordinary Thinking Objective Questions (Electric Flux and Gauss.s Law)|28 Videos

  • KINETIC THEORY OF GASES

    ERRORLESS |Exercise QUESTIONS|126 Videos

Similar Questions

Explore conceptually related problems

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

At any temperature for a neutral solution

For a thermocouple the neutral temperature is 270^(@)C when its cold junction is at 20^(@)C . What will be the neutral temperature and the temperature of inversion when the temperature of cold junction is increased to 40^(@)C

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.

Neutral temperature of a thermocouple is define as the temperature at which

Assertion: Neutral temperature of a thermocuple does not depend upon temperature of cold junction. Reason: Its value is constant for the given metals of the couple

With the cold junction at 0^(@)C the neutral temperature for a thermo-couple is obtained at 270^(@)C . The cold junction temperature is now lowered to -10^(@)C Obta in the (a) neutral temperature (b) the temperature of inversion in this case.

If theta_i , is the inversion temperature, theta_n is the neutral temperature, theta_c is the temperature of the cold junction, then