Resistors: Thermistors & LDR's (OCR GCSE Physics A (Gateway Science Suite)): Quizzes
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Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
What happens to a thermistor's resistance as temperature increases?
What happens to a thermistor's resistance as temperature increases?
It decreases
What happens to an LDR's resistance as light intensity increases?
What happens to an LDR's resistance as light intensity increases?
It decreases
What are thermistors and LDRs used in?
What are thermistors and LDRs used in?
Sensing circuits
What can a thermistor in a sensing circuit switch on when it is cold?
What can a thermistor in a sensing circuit switch on when it is cold?
A heater
What can a thermistor activate when it gets hot?
What can a thermistor activate when it gets hot?
A fan
What is the resistance of an LDR when the room is dark?
What is the resistance of an LDR when the room is dark?
High
What is the potential difference across the bulb when the room is dark?
What is the potential difference across the bulb when the room is dark?
High
How does the bulb shine when the room is dark?
How does the bulb shine when the room is dark?
Brighter
What is the resistance of an LDR when there is bright light in the room?
What is the resistance of an LDR when there is bright light in the room?
Very low
What is the potential difference across the bulb in bright light?
What is the potential difference across the bulb in bright light?
Low
How does the bulb appear in bright light?
How does the bulb appear in bright light?
Dimmer