When a metallic conductor is heated, its resistance\

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Professor PC Thomas Classes · Answer

$ho=\frac{m}{n^{2} 	au}$\ $ho$ is resistivity and $	au$ is relaxation time. When temperature increases $	au$ decreases, $ho$ increases $\mathrm{R}=\frac{ho \mathrm{L}}{\mathrm{A}}$. When $ho$ increases R increases.\