What does a breadboard help you do in a circuit?

• Solder components together

• Connect components without soldering

• Increase voltage

• Decrease current

What is the role of the Arduino board in a circuit?

• The Arduino board is only for connecting sensors without processing data.
• The Arduino board serves as the central processing unit that controls and manages the components in a circuit.
• The Arduino board acts as a passive component in the circuit.
• The Arduino board is used solely for powering the circuit.

Which function is used to send an output signal to the LED on the Arduino?

• digitalWrite()
• setLED()
• turnOnLED()
• writeDigital()

What does the buzzer do in the ambulance siren circuit?

• The buzzer plays music to entertain patients.
• The buzzer indicates the ambulance is out of service.
• The buzzer controls the speed of the ambulance.
• The buzzer alerts others to the ambulance's presence.

In the Arduino code, what does the pinMode() function do?

• The pinMode() function sets the mode of a specified pin to INPUT or OUTPUT.
• The pinMode() function sets the voltage level of a specified pin.
• The pinMode() function initializes the Arduino board.
• The pinMode() function reads the value of a specified pin.

How does the push button work in a circuit?

• A push button increases voltage in a circuit.
• A push button acts as a resistor to limit current.
• A push button generates power for the circuit.
• A push button completes or breaks a circuit to control current flow.

What is the purpose of a resistor in the pushbutton-LED circuit?

• To limit current and protect the LED.
• To amplify the signal from the pushbutton.
• To store electrical energy for later use.
• To increase the voltage across the LED.

Which tool can be used to simulate circuits online, like the ones you built in class?

• Falstad Circuit Simulator
• CircuitLab
• Tinkercad Circuits
• EasyEDA

How is the buzzer connected in the ambulance siren circuit?

• Directly to the 5V and GND pins

• To the LED

• To a digital pin and GND, controlled by the Arduino

• Through a resistor only

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

• To increase the speed of program execution.
• To reset the Arduino board.
• To read input from sensors.
• To pause program execution for a specified duration.