All Courses
Explore Courses UPSC Exam UPSC Test Series Free Notes EduRev Infinity Get the App Login Join for Free
Sign in Open App
JEE Exam  >  JEE Questions  >  Consider the following two statements A and B... Start Learning for Free
SaveJoin the Discussion on the App
Consider the following two statements A and B, and identify the correct choice 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
  • a)
    A is false and B is true
  • b)
    A is true and B is false
  • c)
    Both A and B are false
  • d)
    Both A and B are true
Correct answer is option 'A'. Can you explain this answer?
FREE This question is part of
Download PDF Attempt Test
Download PDF Attempt this Test
Most Upvoted Answer
Consider the following two statements A and B, and identify the correc...
Thermo e.m.f is minimum at neutral temperature of a thermocouple
- The thermo e.m.f of a thermocouple is the voltage produced when two junctions made of two different metallic wires are maintained at different temperatures.
- The thermo e.m.f is maximum when there is a large temperature difference between the two junctions.
- At the neutral temperature of a thermocouple, the two junctions will be at the same temperature, resulting in no temperature difference and hence no e.m.f.
- Therefore, the statement A is false as the thermo e.m.f is minimum at the neutral temperature of a thermocouple.

When two junctions made of two different metallic wires are maintained at different temperatures, an electric current is generated in the circuit
- When two junctions made of two different metallic wires are maintained at different temperatures, a temperature gradient is established between the junctions.
- This temperature gradient causes the free electrons in the metallic wires to move from the hot junction to the cold junction, creating an electric current.
- This phenomenon is known as the Seebeck effect and is the principle behind the operation of a thermocouple.
- Therefore, the statement B is true as an electric current is generated in the circuit when two junctions made of two different metallic wires are maintained at different temperatures.
Therefore, the correct choice of given answers is option 'A', where statement A is false and statement B is true.
< Previous Question Next Question >
Explore Courses for JEE exam

Similar JEE Doubts

In the Figure, isotherms of CO2 at several temperatures near the critical point are shown. At the critical point (critical stat e), the distinction between the liquid and gaseous states disappear and the density of the gaseous substance is equal to that in the liquid state. For every gas this occurs at specific values of temperature and pressure, called critical temperature and critical pressure respectively. At temperatures and pressures above the critical point value, a gas is said be in a supercritical state. Critical constants are evaluated by solving the Vander W aals equation which is a cubic involume. The values are TcIn the supercritical region the behaviour is studied by plotting Z vs P plots. The variation in this region is studied with respect to boyles temperature aAt temperaturehigher than CB the variation is linear (Plot I) and at temperature lower than CB the variation is non linear (Plot II) With reference to the passage answers the following questions:Q.Two Vander waals gases have same value b but different a value then which of the following statement is correct under similar condition.

In the Figure, isotherms of CO2 at several temperatures near the critical point are shown. At the critical point (critical stat e), the distinction between the liquid and gaseous states disappear and the density of the gaseous substance is equal to that in the liquid state. For every gas this occurs at specific values of temperature and pressure, called critical temperature and critical pressure respectively. At temperatures and pressures above the critical point value, a gas is said be in a supercritical state. Critical constants are evaluated by solving the Vander W aals equation which is a cubic involume. The values are TcIn the supercritical region the behaviour is studied by plotting Z vs P plots. The variation in this region is studied with respect to boyles temperature aAt temperaturehigher than CB the variation is linear (Plot I) and at temperature lower than CB the variation is non linear (Plot II) With reference to the passage answers the following questions:Q.For a real gas at a given temperature, which of the following facts is not correct?

Top Courses for JEEView all

Top Courses for JEE

Consider the following two statements A and B, and identify the correct choice 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 circuita)A is false and B is trueb)A is true and B is falsec)Both A and B are falsed)Both A and B are trueCorrect answer is option 'A'. Can you explain this answer?
Question Description
Consider the following two statements A and B, and identify the correct choice 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 circuita)A is false and B is trueb)A is true and B is falsec)Both A and B are falsed)Both A and B are trueCorrect answer is option 'A'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Consider the following two statements A and B, and identify the correct choice 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 circuita)A is false and B is trueb)A is true and B is falsec)Both A and B are falsed)Both A and B are trueCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following two statements A and B, and identify the correct choice 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 circuita)A is false and B is trueb)A is true and B is falsec)Both A and B are falsed)Both A and B are trueCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Consider the following two statements A and B, and identify the correct choice 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 circuita)A is false and B is trueb)A is true and B is falsec)Both A and B are falsed)Both A and B are trueCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.
Here you can find the meaning of Consider the following two statements A and B, and identify the correct choice 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 circuita)A is false and B is trueb)A is true and B is falsec)Both A and B are falsed)Both A and B are trueCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Consider the following two statements A and B, and identify the correct choice 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 circuita)A is false and B is trueb)A is true and B is falsec)Both A and B are falsed)Both A and B are trueCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Consider the following two statements A and B, and identify the correct choice 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 circuita)A is false and B is trueb)A is true and B is falsec)Both A and B are falsed)Both A and B are trueCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Consider the following two statements A and B, and identify the correct choice 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 circuita)A is false and B is trueb)A is true and B is falsec)Both A and B are falsed)Both A and B are trueCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Consider the following two statements A and B, and identify the correct choice 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 circuita)A is false and B is trueb)A is true and B is falsec)Both A and B are falsed)Both A and B are trueCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice JEE tests.
Explore Courses for JEE exam

Top Courses for JEE

Explore Courses

Suggested Free Tests

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Get App
© EduRev
Education Revolution
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup