1
It is an electronic switch
2
It transforms electricity into light
3
There is more than one path for electricity
4
It controls if electricity passes
5
There is one path for electricity
6
It transforms electricity into sound
7
It is an electromagnetic switch
8
It transforms electricity into motion
9
It allows electricity to pass if you connect the positive of the diode with the positive of the battery
10
It detects light and its resistance changes