LDRs and thermistors (AQA GCSE Physics): Flashcards
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14 cards from this deck
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Practise the cards
14 cards from this deck
LDR stands for
LDR stands for
Light-dependent resistor
What LDRs respond to
What LDRs respond to
Light levels
LDR resistance in the dark
LDR resistance in the dark
High resistance
LDR resistance in bright light
LDR resistance in bright light
Low resistance
LDR: Brightness UP, resistance...
LDR: Brightness UP, resistance...
DOWN
What thermistors respond to
What thermistors respond to
Temperature
Thermistor resistance when cold
Thermistor resistance when cold
High resistance
Thermistor resistance when hot
Thermistor resistance when hot
Low resistance
Thermistor: Temperature UP, resistance...
Thermistor: Temperature UP, resistance...
DOWN
NTC stands for
NTC stands for
Negative Temperature Coefficient
Example use of LDRs
Example use of LDRs
Street lights/automatic lighting systems
Example uses of thermistors
Example uses of thermistors
Fire alarms, thermostats, prevent overheating
Category LDRs and thermistors belong to
Category LDRs and thermistors belong to
Variable resistors
Role of LDRs and thermistors in circuits
Role of LDRs and thermistors in circuits
Sensors detecting environmental changes