Circuit Devices Flashcards
1
Q
Why are LEDs are being used more and more
A
Used as lighting as they use a smaller amount of current
2
Q
What are some uses of LEDs
A
Used to show if the current is flowing in a circuit
Also in a TV to see if it is switched on
3
Q
What is an ldr
A
A light dependant resistor that depends of intensity of light
4
Q
What are uses if ldr’s
A
Automatic night light s
Outdoor lighting
Burglar detectors
5
Q
What is thermistor what is it like in hot and colds conditions
A
Temperature dependant resistor
Hot conditions resistance drops
Cool conditions resistance increases
6
Q
What is a use of a thermistor
A
Car engine temperature sensors
Thermostats
7
Q
What is an led
A
Light emitting diode
Emits light when the current flows through it in a forward direction
