Washington Esthetician State Board Practice Exam

Which statement about electrical appliances is true?

1. They have one electrical connection.

2. They are powered by batteries only.

3. They have 2 electrical connections.

4. They operate on solar energy.

The correct answer is: They have 2 electrical connections.

The statement that electrical appliances have two electrical connections is accurate because most electrical devices require a complete circuit to function properly, which typically involves a live wire (or hot) and a neutral wire. This setup allows for the safe flow of electricity. The two connections help to create a pathway for the electrical current to travel, powering the device while also minimizing the risk of electrical faults or short circuits. Other options describe scenarios that are less common or do not apply universally to electrical appliances. For instance, while some devices do operate on batteries, they are not exclusively battery-powered; many can also be plugged into an outlet, so stating they are powered by batteries only would not encompass the variety of devices available. The suggestion that appliances operate solely on solar energy overlooks the fact that, although some appliances do use solar power, it is not the standard connection mechanism for most electrical devices. Lastly, claiming that appliances have only one electrical connection is misleading, as a single connection would not complete a circuit, which is necessary for operation.