Question

When two wires of different material are joined together at either end, forming two junctions which are maintained at a different temperature, a thermo-motive force is generated causing a current to flow around the circuit. This arrangement is called ___________

(a) thermal pair

(b) thermistor

(c) thermocouple

(d) thermostat

Answer 1

The correct option is (c) thermocouple

For explanation: This arrangement is called thermocouple. The junction at a higher temperature in thermocouple is termed as measuring junction. The junction at lower temperature in the thermocouple is called the reference temperature.