6 Arduino: Potentiometers

What component is connected to pin A0 in the Arduino setup?

• LED

• Resistor

• Potentiometer

• Breadboard

What is the purpose of the `Serial.begin(9600);` command in the setup function?

• To initialize the analog pin

• To set the baud rate for serial communication

• To start the loop function

• To read the sensor value

In the code provided, what does the `analogRead(A0);` function do?

• It writes a value to the analog pin

• It reads the input from analog pin 0

• It initializes the serial communication

• It delays the loop for stability

What is the purpose of converting the analog reading to a voltage?

• To initialize the serial communication

• To set the baud rate

• To know the exact voltage moving through the circuit

• To delay the loop for stability

What is the role of the side pins of the potentiometer?

• They connect to digital pins

• They connect to +5V and ground

• They connect to the Serial Monitor

• They connect to the LED

What is the maximum value of `sensorValue` of the analog input?

• 1023

• 255

• 5

• 1

What does the `Serial.print` function do in the code?

• Initializes the serial monitor

• Prints values to the serial monitor

• Reads analog input

• Delays the loop

What happens if only two terminals (both outer pins) of a potentiometer are used?

• It acts as a fixed 10kΩ resistor

• It acts as a variable resistor

• It acts as a capacitor

• It acts as a diode

What happens if only two terminals (center and either outer pin) of a potentiometer are used?

• It acts as a fixed 10kΩ resistor

• It acts as a variable resistor

• It acts as a capacitor

• It acts as a diode

What is the function of the wiper in a potentiometer?

• To fix the resistance

• To adjust the resistance

• To increase the voltage

• To decrease the current