PadhaiBy Astra Cloud
Search notes and questions
Ask a doubtProgramsNoticesGPA calculatorMy studyClassroom

Tribhuvan University

BSc CSITBachelor of Science in Computer Science and Information TechnologyBCABachelor of Computer ApplicationBITBachelor of Information TechnologyBIMBachelor of Information ManagementBBABachelor of Business AdministrationBBSBachelor of Business StudiesBBMBachelor of Business ManagementBITMBachelor of Information Technology Management

Pokhara University

BE Computer (PU)Bachelor of Engineering in Computer EngineeringBBA (PU)Bachelor of Business Administration (Pokhara University)

National Examinations Board (+2)

Class 10Class 10 (SEE)+2 Science+2 Science (Class 11 and 12)+2 Management+2 Management (Class 11 and 12)+2 Humanities+2 Humanities (Class 11 and 12)
All universities and programs

Phy Physics

PhysicsNEB 2080

Which of the following is the phenomenon of production of emf by maintaining a difference of temperature between two junctions of dissimilar metals ? a) Joule's effect b) Seebeck effect c) Peltier…

1

Which of the following is the phenomenon of production of emf by maintaining a difference of temperature between two junctions of dissimilar metals ? a) Joule's effect b) Seebeck effect c) Peltier effect d) Thomson's effect

Answer

· Based on the official syllabus and past papers
Updated

The phenomenon of producing an electromotive force (emf) by maintaining a temperature difference between two junctions of dissimilar metals is known as the Seebeck effect.

Explanation:

  • When two different metals (e.g., copper and iron) are joined at two junctions and one junction is heated while the other is kept cool, a voltage difference (emf) is generated across the circuit.
  • This effect is the basis of thermocouples, which are used to measure temperature.
  • The other options are unrelated:
    • Joule’s effect refers to heat produced due to the resistance of a conductor when current flows through it.
    • Peltier effect involves heat absorption or release at the junction of two dissimilar metals when an electric current passes through them.
    • Thomson’s effect refers to the heating or cooling of a current-carrying conductor with a temperature gradient along its length.

Thus, the correct answer is (b) Seebeck effect.

Discussion

Loading…

More Physics questions

What is the difference between moment of inertia of a rod about an axis passing through its one end and through its centre perpendicular to its length ? a) M…NEB 2082 (MCQs)1For an oscillating object, the displacement versus time curve shown in figure. What is the velocity of the object in the mean position ? [figure in the…NEB 2082 (MCQs)1Two spherical rain drops of equal size are falling vertically downward with terminal velocity of 0.15m/s . What would be the terminal velocity if these drops…NEB 2082 (MCQs)1What happens in an adiabatic process ? a) Volume remains constant b) Pressure remains constant c) Temperature remains constant d) The system is insulated from…NEB 2082 (MCQs)1The efficiency of Carnot engine operating between steam point and ice point is a) 26.8\% b) 50\% c) 73.2\% d) 100\%NEB 2082 (MCQs)1Which of the following is an example of transverse wave ? a) Sound wave in air b) Waves inside the water c) Wave produced in the stem of vibrating tuning fork…NEB 2082 (MCQs)1

All Physics old questions