Arduino Level 1 Quiz

What happens if you change the resistor in an Arduino LED circuit to a higher value like 10k ohms compared to 1k ohms?

• The LED becomes brighter.

• The LED becomes dimmer.

• The LED turns off.

• The LED blinks faster.

In an Arduino program, how can you make three Red LEDs turn on together for 3 seconds?

• Use the delay(300).

• Use the delay(3000).

• Use the delay(30000).

• Use the delay(30).

When the resistor value in an LED circuit is increased, what happens to the current through the LED?

• Increases

• Decreases

• Stays the same

What is the primary purpose of the delay() function in an Arduino program?

• To pause the program for a specified amount of time.

• To increase the voltage to an LED.

• To change the resistance in a circuit.

• To make Arduino to stop the program.

If you want to make the Red LED in the traffic light program stay on longer, which part of the code would you need to modify?

• The delay() value for the Red LED.

• The pinMode() for the Red LED.

• The digitalWrite() for the Red LED.

What is the primary purpose of a resistor in an LED circuit?

• To control the brightness of the LED.

• To control the color of the LED.

• To turn the LED on and off.

• To provide power to the Arduino.

What is the main purpose of the USB connection on an Arduino Uno?

• To power the Arduino Uno

• To connect to a Wi-Fi network

• To upload sketches (programs) to the Arduino

• To display output on an LCD screen

Which microcontroller is commonly used in the Arduino Uno?

• ATmega2560

• ATmega328P

• ESP8266

• Raspberry Pi

What is the purpose of the setup() function in an Arduino sketch?

• It runs continuously to control the main program.

• It initializes settings and runs once when the Arduino starts.

• It defines custom functions used in the sketch.

• It is used to display output on the serial monitor.

What is the purpose of "verify" in the context of Arduino sketches?

• To check for syntax errors and compile the sketch.

• To upload the sketch to the Arduino board.

• To display the output of the sketch on the serial monitor.

• To test the functionality of the sketch with external hardware.