As the temperature of a Thermistor increases, what happens to the current flow through it?

In the context of a thermistor, which is a type of resistor whose resistance changes with temperature, the behavior of current flow is closely tied to the thermistor's characteristics. When the temperature of a thermistor increases, its resistance typically decreases, particularly for a Negative Temperature Coefficient (NTC) thermistor.

As the resistance decreases with increasing temperature, Ohm's Law (V = IR) comes into play. Given a constant voltage across the thermistor, a decrease in resistance will result in an increase in current flow. This is because the current (I) is inversely related to resistance (R) when the voltage (V) is held constant. Therefore, as the temperature rises and the resistance falls, the current flowing through the thermistor increases.

This relationship is fundamental in various applications, particularly in temperature sensing and control, where thermistors are commonly used to monitor and respond to changes in temperature.