Thermocouples produce voltage because of the action of two dissimilar metals. The voltage produced depends on the type of metals used and the _____ difference between the junction and the open ends.

A) distance
B) height
C) time
D) temperature

Thermocouples

Electrical devices consisting of two dissimilar conductors forming electrical junctions at differing temperatures, used to measure temperature gradients or temperature changes.

Temperature Difference

The variation in temperature between two points, which can drive heat transfer or affect the performance of electrical components.