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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Complete Physics For Cambridge IGCSE RG

ISBN: 9780198308713

3rd Edition

Authors: Stephen Pople

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Question Posted: Aug 27, 2021 02:18 AM

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A simple burglar alarm has two sensors: A heat source, which gives a high output when

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a The thermistor is a type of resistor that is sensitive to tempera...View the full answer

Complete Physics For Cambridge IGCSE RG

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