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Thermistor

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Key Stage 4

Meaning

The symbol for a thermistor.

A thermistor is a resistor which changes resistance depending on the temperature.

About Thermistors

'NTC' thermistors decrease resistance as the temperature increases.
A thermistor can be used to control the current passing through a circuit. If the potential difference is constant then the current decreases as temperature decreases.
A thermistor can be used to control the potential difference of another component in series with it. If the temperature is decreased then the potential difference across other components will decrease.
Thermistors can be used temperature sensors.