What is electricity?

• The flow of air

• The flow of electrons

• The flow of water

• The flow of light

What is the unit of current?

• Volt

• Ohm

• Watt

• Ampere

Which component is used to reduce current in a circuit?

• Capacitor

• Battery

• Diode
• Resistor

In an electronic circuit, what does an LED do?

• Stores energy

• Produces sound

• Emits light

• Controls voltage

What does the digitalWrite() function in Arduino code do?

• Reads data from a sensor

• Sends a signal to a pin

• Connects the circuit

• Stops the program

What does the buzzer do in a circuit?

• Emits sound

• Lights up

• Controls current

• Measures voltage

What is the purpose of a breadboard in a circuit?

• To hold components permanently

• To test and build circuits without soldering

• To generate power

• To connect only sensors

What is a loop in programming?

• A function to delay the program

• A variable declaration

• A type of sensor

• A way to repeat a set of instructions

What happens if you connect an LED without a resistor?

• It won’t light up

• It might burn out

• It will glow brighter

• It will emit sound

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

• Pauses the program for a specific time

• Turns off the Arduino

• Creates a loop

• Controls the motor speed