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1. Show that the difference in Kelvin coefficients for a thermocouple made of conductors A and B can be written in terms of the open circuit voltage as τ_AB = T (d²?_AB/dT²).

2. Show that, if the Kelvin thermoelectric effect did not exist (i.e., if τ_AB were zero), then the voltage produced by a thermocouple would always depend linearly on temperature.

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Reference No.:- M92100357

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