At low temperatures, will a thermistor have a high or a low resistance?low resistancehigh resistance
Question
At low temperatures, will a thermistor have a high or a low resistance?
- low resistance
- high resistance
Solution
Understanding Thermistors
A thermistor is a type of resistor whose resistance varies significantly with temperature. There are two main types of thermistors: Negative Temperature Coefficient (NTC) and Positive Temperature Coefficient (PTC).
-
Negative Temperature Coefficient (NTC) Thermistor: In this type, the resistance decreases as the temperature lowers. Therefore, at low temperatures, NTC thermistors will exhibit high resistance.
-
Positive Temperature Coefficient (PTC) Thermistor: Conversely, PTC thermistors have resistance that increases as the temperature decreases. Thus, they exhibit low resistance at low temperatures.
Conclusion
Considering that the question does not specify the type of thermistor, it's generally understood that most thermistors used in sensing applications are NTC thermistors. Therefore, at low temperatures, a thermistor (specifically an NTC thermistor) will have:
- High Resistance
Thus the answer is high resistance.
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