Thermo electric power is defined as the rater of charge of thermo with temperature it is also called see beck coefficient and is denoted by S.
From experimental study it was concluded that the variation of thermo e with the temperature C of the hot junction when cold junction is at OC is a parabolic curve represented by the equation
E = a θ + 1 / 2 β θ2
Where a and β are constants which depend upon the nature of the metals forming the thermocouple and the temperature difference of the two junction.
The thermoelectric power (called see beck coefficient) is given by
S = dE/d θ = ∝ + β θIt means S ∝ θ   _{Your Comment}