Investigating Resistance in Thermistors & LDRs (OCR GCSE Physics A, Combined (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 type of circuits are thermistors and LDRs used in?
What type of circuits are thermistors and LDRs used in?
Sensing circuits
What do thermistors and LDRs vary in sensing circuits?
What do thermistors and LDRs vary in sensing circuits?
Resistance across another component
When might a thermistor switch on a heater in a sensing circuit?
When might a thermistor switch on a heater in a sensing circuit?
When it is cold
When might a thermistor activate a fan in a sensing circuit?
When might a thermistor activate a fan in a sensing circuit?
When it gets hot
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 potential difference does the bulb have when the room is dark?
What potential difference does the bulb have when the room is dark?
High potential difference
How does the bulb shine in darker conditions?
How does the bulb shine in darker conditions?
Brighter
What is the LDR's resistance when there is bright light?
What is the LDR's resistance when there is bright light?
Very low resistance
How is the bulb affected by bright light in the room?
How is the bulb affected by bright light in the room?
It is dimmer