Q. Which of the following graphs shows the variation of thermoelectric power with temperature difference between hot and cold junction in thermocouples
A) [image:3_image79.wmf]
B)
C)
D)
Explanation
(a) Thermo electric power$\ P = \frac{dE}{d\theta} = \alpha + \beta\theta$
Comparing it with $y = mx + c,$ option (a) is correct
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.