Exam-style question
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Describe how the resistance of a thermistor changes with temperature and its effect on the output voltage in a potential divider circuit.
Model answer
What a good answer should say
- The resistance of a thermistor decreases as temperature increases.
- In a potential divider circuit, this results in a higher output voltage across the thermistor at higher temperatures, as less voltage is dropped across the other resistor.
Explanation
Why this works
This answer effectively outlines the relationship between temperature and resistance in a thermistor, and how this impacts the output voltage in a potential divider circuit. The question assesses the ability to apply knowledge of thermistors in practical scenarios.
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