Final answer:
Thermocouples and thermistors are both temperature sensors used in various applications. Thermocouples produce a voltage based on temperature difference, while thermistors change their resistance with temperature.
Step-by-step explanation:
Thermocouples and thermistors are both temperature sensors used in various applications.
A thermocouple is made up of two dissimilar metals that produce a voltage when there is a temperature difference between its ends. This voltage can be measured and used to determine the temperature. Thermocouples are commonly used in industries, such as in manufacturing processes and in temperature monitoring of engines.
On the other hand, a thermistor is a type of resistor whose resistance changes with temperature. It is made of a semiconductor material with a high temperature-dependent resistance. Thermistors are often used in temperature control circuits and are found in devices like thermometers and thermostats.
In summary, thermocouples produce a voltage based on temperature difference, while thermistors change their resistance with temperature.