The ultrasonic sensor works by using __________ waves.

Which two main components make up the ultrasonic sensor?

In Arduino, which pins are commonly used for the ultrasonic sensor?

The typical operating voltage of an HC-SR04 ultrasonic sensor is __________.

What happens when voltage is applied to a piezo buzzer?

The function noTone(pin); is used to __________.

In a simple project, the ultrasonic sensor’s TRIG pin is usually set as:

In a series circuit, the current:

The breadboard is used for:

The device that automatically stops the flow of current when an overload occurs is called a:

A switch in an electrical circuit is used to:

A fuse protects an electrical circuit by:

A resistor is used to:

A transformer is used to:

The soldering iron is mainly used to:

A 4-way switch is used when:

Which type of switch is commonly used in stairways or hallways to control one light from two different locations?

A convenience outlet is also known as a:

The purpose of a grounding connection in an outlet is to:

In programming, a control structure is used to:

The if–else structure is used when:

The main function that runs repeatedly in an Arduino sketch is: