Physics - Semiconductors Question with Solution | TestHub
In case of thermistor, which one of the following statements is 'WRONG'?
Options:
Answer:
Solution:
A thermistor is a type of resistor whose resistance is highly dependent on temperature.
There are two main types of thermistors: NTC (Negative Temperature Coefficient) and PTC (Positive Temperature Coefficient).
For an NTC thermistor, the resistance decreases as the temperature increases. They are commonly used as temperature sensors.
For a PTC thermistor, the resistance increases as the temperature increases. Because of this property, they are generally used as resettable fuses in circuits.
Therefore, the statement that the resistance of a PTC thermistor decreases with an increase in its temperature is incorrect.
Answer: Resistance of PTC thermistor decreases with increase in its temperature.
