The Peltier coefficient for the junction of a | vedclass

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(A) The Peltier effect describes the heat evolved or absorbed at the junction of two dissimilar metals when an electric current passes through it.The

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$T$ (absolute temperature of the junction)

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(A) The Peltier effect describes the heat evolved or absorbed at the junction of two dissimilar metals when an electric current passes through it.The Peltier heat $Q$ is given by $Q = \pi I t$, where $\pi$ is the Peltier coefficient, $I$ is the current, and $t$ is the time.According to the Kelvin relations for thermoelectric effects, the Peltier coefficient $\pi$ is directly proportional to the absolute temperature $T$ of the junction, expressed as $\pi = S T$, where $S$ is the Seebeck coefficient.Therefore, the Peltier coefficient is proportional to the absolute temperature $T$ of the junction.

The Peltier coefficient for the junction of a pair of metals is proportional to:

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