Physics - Fluid Question with Solution | TestHub

$\mathrm{E}=\mathrm{at}+\frac{1}{2}{\mathrm{bt}}^2$ is the parabolic equation for thermo emf. The thermoelectric power is $\mathrm{S}=\frac{\mathrm{dE}}{\mathrm{dt}}$ $\Rightarrow \mathrm{S}=\mathrm{a}+\mathrm{bt}$. The graph between $\mathrm{S}\left(=\frac{\mathrm{dE}}{\mathrm{dt}}\right)$ and straight line. When $\mathrm{t}=0,\mathrm{S}=\mathrm{a}$ (intercept). At neutral temperature $\frac{\mathrm{dE}}{\mathrm{dt}}=0$ and $\mathrm{t}={\mathrm{t}}_{\mathrm{n}}\Rightarrow 0=\mathrm{a}+{\mathrm{bt}}_{\mathrm{n}}\Rightarrow {\mathrm{t}}_{\mathrm{n}}=\frac{-\mathrm{a}}{\mathrm{b}}$ and at cold junction ${\mathrm{t}}_{\mathrm{i}}=2{\mathrm{t}}_{\mathrm{n}}=\frac{-2\mathrm{a}}{\mathrm{b}}$