When a thermistor is used in a basic Wheatstone bridge measuring circuit, the bridge becomes as the thermistor's resistance changes with .
A) balanced, changes in current
B) balanced, changes in light
C) balanced, changes in pressure
D) unbalanced, changes in temperature

Question

Quizplus · Accepted Answer

The thermistor is a temperature-sensitive resistor, so when its resistance changes due to temperature variations, it causes the Wheatstone bridge to become unbalanced. This unbalance is then measured to determine the change in temperature.

When a Thermistor Is Used in a Basic Wheatstone Bridge