Concepts Of Physics MCQ Edition [Volume 2]
- Exam
- Concepts Of Physics MCQ Edition [Volume 2]
- Subject
- Physics
- Chapter
- Thermal and Chemical Effects of Electric Current
Concepts Of Physics MCQ Edition [Volume 2] · Physics · Thermal and Chemical Effects of Electric Current
Thomson effect is caused
Thomson effect is caused
Options
- Adue to both A and B
- Bdue to A but not due to B
- Cdue to B but not due to A
- Dneither due to A nor due to B
Correct answer
A. due to both A and B
Step-by-step solution
Thomson effect is the evolution or absorption of heat when an electric current passes through a single conductor having a temperature gradient along its length.
This effect arises because the charge carriers at different temperatures have different kinetic energies and different concentrations. When an electric current flows, the charge carriers move from a region of one temperature to a region of another temperature. In order to attain thermal equilibrium with the lattice at the new temperature, they either absorb or release heat.
Therefore, the Thomson effect is caused by both the difference in the concentration of charge carriers and the difference in their kinetic energies at different temperatures. Hence, it is due to both A and B.
This effect arises because the charge carriers at different temperatures have different kinetic energies and different concentrations. When an electric current flows, the charge carriers move from a region of one temperature to a region of another temperature. In order to attain thermal equilibrium with the lattice at the new temperature, they either absorb or release heat.
Therefore, the Thomson effect is caused by both the difference in the concentration of charge carriers and the difference in their kinetic energies at different temperatures. Hence, it is due to both A and B.