How to Use a Reed Switch with Arduino (Lesson #30)

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Science, Information Technology (IT), Architecture, Engineering
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1st - 6th Grade
•
Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key advantage of using a Reed switch in Arduino projects?
It is waterproof.
It works independently of the magnet's orientation.
It is sensitive to light.
It requires physical contact to operate.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a type of Reed switch packaging mentioned?
Plastic encapsulated
Metal encapsulated
Glass encapsulated
Window/door mountable
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of the 10K ohm pull-down resistor in the Reed switch circuit?
To increase the current flow
To power the LED
To connect the switch to the ground
To prevent false readings
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the Arduino code, what does the digitalRead function do?
It sets the mode of a pin.
It initializes the Arduino board.
It reads the state of a digital pin.
It writes a high or low value to a pin.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when the Reed switch detects a nearby magnet?
The circuit remains open.
The switch becomes inactive.
The metal plates inside the switch close the circuit.
The LED turns off.
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