Question 14
Temperature and ThermometersThe thermometric property of the thermocouple is that its
- A.e.m.f. changes with temperature
- B.resistance changes with temperature
- C.volume changes with temperature
- D.pressure changes with resistance.
Show the answer and explanation
Answer: A (e.m.f. changes with temperature)
Explanation
A thermocouple produces an e.m.f. that depends on the temperature difference between its two junctions.