Resistors: Thermistors & LDR's (OCR GCSE Physics A (Gateway Science Suite)): Flashcards
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13 cards from this deck
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Practise the cards
13 cards from this deck
How does thermistor resistance change as temperature increases?
How does thermistor resistance change as temperature increases?
Decreases
What LDR stands for
What LDR stands for
Light-dependent resistor
How does LDR resistance change as light intensity increases?
How does LDR resistance change as light intensity increases?
Decreases
Circuits that use thermistors and LDRs
Circuits that use thermistors and LDRs
Sensing circuits
Role of thermistor/LDR in sensing circuits
Role of thermistor/LDR in sensing circuits
Vary resistance across another component
Thermistor application when cold
Thermistor application when cold
Switch on heater
Thermistor application when hot
Thermistor application when hot
Activate fan
LDR resistance in dark conditions
LDR resistance in dark conditions
High
Bulb potential difference when dark (LDR circuit)
Bulb potential difference when dark (LDR circuit)
High
Bulb brightness when dark (LDR circuit)
Bulb brightness when dark (LDR circuit)
Brighter
LDR resistance in bright light
LDR resistance in bright light
Low
Bulb potential difference in bright light (LDR circuit)
Bulb potential difference in bright light (LDR circuit)
Low
Bulb brightness in bright light (LDR circuit)
Bulb brightness in bright light (LDR circuit)
Dimmer