New Jersey State Board Esthetics Practice Exam

When a blow dryer is on and air begins to flow, what is that called?

1. An open circuit

2. A short circuit

3. A closed circuit

4. Electrical flow

The correct answer is: A closed circuit

When a blow dryer is turned on and air begins to flow, this indicates that the electrical circuit is complete and functioning properly. This status is referred to as a closed circuit, which means that electricity is flowing through the device, allowing it to operate as intended. In a closed circuit, the path for electrical current is uninterrupted, leading to the blow dryer generating airflow and heat. The other terms describe different conditions in an electrical circuit. An open circuit occurs when the path is broken, meaning no current flows, and the device would not operate. A short circuit happens when there is an unintended path created for electricity to flow, which can lead to damage or hazards. Electrical flow is a general term describing the movement of electrons through a circuit but does not specifically indicate the circuit's status. Understanding these distinctions helps in recognizing how devices like blow dryers operate safely and effectively.