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What is Pelti...

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What is Peltier effect?

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Solution

Peltier effect:
When an electric current is passed across a junction between two materials then a temperature difference is created- one junction becomes cooler and one junction becomes hotter. This effect is known as Peltier effect, named after scientist who discovered it.

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Q. What are Peltier and Thomson effects? Define their coefficients.

Q. State any two differences between Peltier effect and Joule effect.

Q. Assertion (A): Joules heating effect is irreversible.
Reason (R): Seebeck effect and Peltier effect are reversible

From the following statements:

(A) Neutral temperature is independent of temperature of cold junction.
(B) Peltier effect is the converse of Seebeck effect.

Q. List - I List - II
a) Peltier effect e) irreversible
b) Joule heating effect f) reversible
c) Thomson effect in Pb g) negative
d) Thomson effect for h) zero.
metal like Fe

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