A thermocouple senses temperature based on the

Q. A thermocouple senses temperature based on the

(A) Nernst Effect

(B) Maxwell Effect

(C) Seebeck Effect

(D) Peltier Effect

Ans: Seebeck Effect

Solution:

(C) Seebeck Effect

A thermocouple senses temperature based on the Seebeck Effect. The Seebeck Effect is a phenomenon in which a temperature difference between two dissimilar conductors or semiconductors generates an electromotive force (EMF) or voltage. This voltage is proportional to the temperature difference and can be used to measure the temperature at one of the junctions of the thermocouple. Thermocouples are commonly used in temperature measurement applications due to their simplicity, reliability, and wide temperature range.