Question:
A thermoelectric refrigerator works on
A thermoelectric refrigerator works on
Updated On: Jul 27, 2022
- Joule effect
- Seebeck effect
- Peltier effect
- Thermionic effect
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The Correct Option is C
Solution and Explanation
Refrigeration is the process of pumping heat energy out of an insulated chamber in order to reduce the temperature of the chamber below that of the surrounding air. Thermoelectric refrigeration uses a principle called the Peltier effect to pump heat electronically. According to this effect when electric current is applied across the junction of two dissimilar metals, heat is removed from one of the metals and transferred to the other.
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Concepts Used:
Electromagnetic Induction
Electromagnetic Induction is a current produced by the voltage production due to a changing magnetic field. This happens in one of the two conditions:-
- When we place the conductor in a changing magnetic field.
- When the conductor constantly moves in a stationary field.
Formula:
The electromagnetic induction is mathematically represented as:-
e=N × d∅.dt
Where
- e = induced voltage
- N = number of turns in the coil
- Φ = Magnetic flux (This is the amount of magnetic field present on the surface)
- t = time
Applications of Electromagnetic Induction
- Electromagnetic induction in AC generator
- Electrical Transformers
- Magnetic Flow Meter