Which of the following statements is true reg | vedclass

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(A) The thermo $e.m.f.$ $(E)$ produced in a thermocouple is given by the relation $E = at + \frac{1}{2}bt^2$,where $t$ is the temperature difference b

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Depends on the nature of metals

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(A) The thermo $e.m.f.$ $(E)$ produced in a thermocouple is given by the relation $E = at + \frac{1}{2}bt^2$,where $t$ is the temperature difference between the junctions.Here,$a$ and $b$ are constants that depend solely on the nature of the metals used to form the thermocouple.Therefore,the thermo $e.m.f.$ depends on the nature of the metals and the temperature difference between the junctions,not on the length or cross-section of the wires.

Which of the following statements is true regarding the thermo $e.m.f.$ of a thermocouple?

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