Investigating Resistance in Thermistors & LDRs (AQA GCSE Physics Combined Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 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 for in circuits?
What are thermistors and LDRs used for in circuits?
Sensing circuits
How might a thermistor be used when it is cold?
How might a thermistor be used when it is cold?
To switch on a heater
How might a thermistor be used when it gets hot?
How might a thermistor be used when it gets hot?
To activate 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 resistance of an LDR when there is bright light?
What is the resistance of an LDR when there is bright light?
Very low
In an LDR-bulb circuit, what is the bulb's potential difference when the room is dark?
In an LDR-bulb circuit, what is the bulb's potential difference when the room is dark?
High
How does a bulb shine in an LDR circuit when the room is dark?
How does a bulb shine in an LDR circuit when the room is dark?
Brighter
How does a bulb shine in an LDR circuit when there is bright light?
How does a bulb shine in an LDR circuit when there is bright light?
Dimmer
Why is the bulb brighter when the room is dark in an LDR circuit?
Why is the bulb brighter when the room is dark in an LDR circuit?
It receives more energy
What do thermistors and LDRs do in sensing circuits?
What do thermistors and LDRs do in sensing circuits?
Vary resistance across components