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NEET2011PhysicsCurrent ElectricityActual

The rate of increase of thermo-emf with temperature at the neutral temperature of a thermocouple

Options

  1. Ais zero
  2. Bdepends upon the choice of the two materials of the thermocouple
  3. Cis negative
  4. Dis positive

Correct answer

A. is zero

Step-by-step solution

We have e=a t+b t^2 Natural temperature d e d t =a+2 b t T_n=- a 2 b At netural temperature d e d t =0

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