Circuit Devices Flashcards
0
Q
What does a led do
A
Emits light when current flows through it in the forward direction
1
Q
What is an led
A
Light emitting diode
2
Q
What are led being used for
A
Lighting as they are much smaller current then other forms of lighting
Used to show whether current is flowing through a circuit
3
Q
What is a ldr
A
Light dependant resistor
4
Q
What does a ldr depend on
A
Intensity of light
5
Q
What are uses of ldr’s
A
Automatic night lights
Outdoor lighting
Burgaler detectors
6
Q
What is a thermistor
A
Temperature dependent resistor
7
Q
What a happens to resistance in hot and cold conditions
A
Hot- resistance drops
Cool- resistance rises
8
Q
What are thermistors used for
A
Car engine temperature sensors
Electronic thermostats
