Arduino Components & LED Circuits – Post-Test | Lesson 2
1. What is a breadboard?
A board made of bread
A board used for prototyping circuits
A cutting board
2. What is a breadboard used for?
Eating sandwiches
Building and testing electronic circuits
Storing wires
3. What is an LED?
A type of switch
A light
A resistor
4. What is a resistor?
A component that stores electricity
A component that slows electrical current
A kind of sensor
5. What does digitalWrite() do?
Reads analog input
Sends power to an output pin
Stores code
6. What does delay(1000) do?
Stops the program forever
Delays for 1 second
Writes to a file
7. Which pin is commonly used for built-in LED?
Pin 0
Pin 13
Pin A0
8. What is the purpose of setup() function in Arduino?
It runs code repeatedly
It runs once at the beginning
It uploads the sketch
9. What must you include to control a pin?
pinMode()
startPin()
digitalPin()
10. What does the loop() function do?
Ends the sketch
Runs code repeatedly
Starts the serial monitor
11. In your own words, explain how you think a breadboard and components like LEDs or resistors work together in a simple Arduino project.
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