P3.2.5 - LDRs and Thermistors Flashcards
1
Q
What does the resistance of a thermistor depend on?
A
Temperature
2
Q
What are thermistors made of?
A
Semiconducting material (silicon)
3
Q
Why are thermistors often made from silicon?
A
Silicon electrons do not require as much energy to escape to form current as it is a semiconductor
4
Q
Why does resistance decrease when you heat a thermistor?
A
The heat energy allows the thermistor’s electrons to form a current
5
Q
What are thermistors used for in everyday life?
A
Monitor temperature in fridge and oven, prevent laptop from overheating
6
Q
What does LDR stand for?
A
Light dependent resistor
7
Q
What does the resistance of an LDR depend on?
A
Light intensity
