Peltier effect and joules law of heating, Physics

Q. Give any two differences among Peltier effect and Joule's law of heating.

Joule's law of heating	Peltier effect
Takes place all through the conductor.	Occurs at the junctions.
Heat produced is proportional to the square of the current.	Heat produced or else absorbed is proportional to the current.
Irreversible process.	Reversible process

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