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Thermister is used to measure _____________(a) temperature(b) pressure(c) height(d) displacementI had been asked this question during an online interview.My doubt stems from Transducers for Body Temperature Measurement in portion Physiological Transducers of Biomedical Instrumentation

Answer»

The correct choice is (a) TEMPERATURE

The best explanation: Thermistor is used to measure temperature. It is a temperature TRANSDUCER. With a change in temperature its resistance changes. Thus its working principle is variable resistance. Thermistors are the oxides of certain METALS like manganese, cobalt and NICKEL which have large negative temperature COEFFICIENT, i.e. resistance decreases with increase in temperature.



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