
Understanding LEDs

Interactive Video
•
Physics, Chemistry, Science
•
5th - 8th Grade
•
Hard

Lucas Foster
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does LED stand for?
Light Emitting Device
Light Emitting Diode
Light Energy Diode
Light Emission Device
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of a diode?
To store electrical energy
To act as a two-way valve for electricity
To convert electricity into light
To act as a one-way valve for electricity
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when you reverse the wires on an LED?
The LED will not turn on
The LED will change color
The LED will blink
The LED will turn on
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a main application of LEDs?
Communication
Heating
Illumination
Indication
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do remote controls use LEDs?
For cooling
For heating
For sending infrared signals
For storing data
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What spectrum of light do most remote control LEDs emit?
X-ray spectrum
Visible spectrum
Ultraviolet spectrum
Infrared spectrum
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many LEDs are arranged in a grid on the front of a micro:bit?
25
27
24
26
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