A simple burglar alarm has two sensors: A heat source, which gives a high output when
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A simple burglar alarm has two sensors:
• A heat source, which gives a high output when someone is nearby.
• A light sensor, which gives a high output when light shines on it.
A thermistor is used in the heat sensor.
a. What happens to the thermistor to cause a change in the sensor output?
b. Suggest a suitable component for the light sensor.
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