Arduino LED Blinking Quiz

What is the purpose of the resistor in the LED circuit?

• To limit the current and prevent the LED from burning out

• To increase the brightness of the LED

• To change the color of the LED light

• To control the blinking pattern of the LED

Which pin on the Arduino is used to connect the positive leg of the LED?

• Ground

• Pin 13

• Analog pin

• 5V pin

What is the function of the digitalWrite() command in Arduino programming?

• Read analog sensor values

• Set a pin HIGH or LOW

• Print text on the serial monitor

• Create delays in the program

What does the delay() function do in Arduino programming?

• Turn off the LED

• Set the pin to OUTPUT mode

• Control the speed of the LED blink

• Change the color of the LED

Which part of the Arduino code runs once when the program starts up?

• Delay function

• Loop

• Comment blocks

• Setup

What is the purpose of the built-in LED on the Arduino board?

• To test external components

• To display error messages

• To provide power to the Arduino

• To control the external LED

How can you customize the LED blink pattern in the Arduino code?

• By changing the LED position

• By adjusting the resistor value

• By changing the LED color

• By modifying the delay times

What is the function of the setup() block in Arduino code?

• To create delays in the program

• To control the loop execution

• To configure pins and settings at the start

• To print output on the serial monitor

Which leg of the LED is connected to the ground?

• Negative leg

• Positive leg

• Cathode

• Anode

What is the purpose of the delay(1000) command in the Arduino code?

• To turn off the LED

• To wait for one second before the next action

• To increase the LED brightness

• To change the LED color