A transducer that converts temperature into resistance is called a what?

A transducer that converts temperature into resistance is called a what?

• A. Resistor
• B. Thermistor
• C. Transformer
• D. Variable Resistor

Answer: (B)

A thermistor is a resistor whose resistance changes with temperature, making it a sensor that converts temperature into a measurable resistance value. There are two types: NTC, where resistance decreases as temperature rises, and PTC, where resistance increases with temperature. This behavior lets you infer temperature by reading the resistance, typically using a simple circuit like a voltage divider and an ADC. In contrast, a regular resistor has a nearly fixed resistance and doesn’t sense temperature. A transformer changes voltage or current levels, not temperature. A variable resistor is adjustable by hand and isn’t inherently linked to temperature. So the device that converts temperature into resistance is a thermistor.

A thermistor is a resistor whose resistance changes with temperature, making it a sensor that converts temperature into a measurable resistance value. There are two types: NTC, where resistance decreases as temperature rises, and PTC, where resistance increases with temperature. This behavior lets you infer temperature by reading the resistance, typically using a simple circuit like a voltage divider and an ADC. In contrast, a regular resistor has a nearly fixed resistance and doesn’t sense temperature. A transformer changes voltage or current levels, not temperature. A variable resistor is adjustable by hand and isn’t inherently linked to temperature. So the device that converts temperature into resistance is a thermistor.