The ends of an element of zinc wire are kept | vedclass

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(A) When a current $I$ flows through a conductor with a temperature difference $\Delta T$ between its ends,the heat developed per unit time is governe

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is proportional to $\Delta T$ and $I$

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(A) When a current $I$ flows through a conductor with a temperature difference $\Delta T$ between its ends,the heat developed per unit time is governed by the Thomson effect. The heat produced per unit time (Thomson heat) is given by the formula $H = \sigma I \Delta T$,where $\sigma$ is the Thomson coefficient. Therefore,the heat developed per unit time is directly proportional to both the current $I$ and the temperature difference $\Delta T$.

The ends of an element of zinc wire are kept at a small temperature difference $\Delta T$ and a small current $I$ is passed through the wire. Then,the heat developed per unit time

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