Colorado Cosmetology Written Practice Exam

Which describes the path of an alternating electrical current in devices like hair dryers and curling irons?

1. Creates a single circuit loop

2. Flows in a spiral pattern

3. Travels in one direction

4. Travels in two directions

The correct answer is: Creates a single circuit loop

In devices like hair dryers and curling irons, the electrical current typically follows a single circuit loop, meaning it flows in one continuous direction. This is known as alternating current, where the flow of electricity constantly changes direction. This differs from direct current, where the flow is constant in one direction. Options B, C, and D are incorrect because they do not accurately describe the behavior of alternating current in these devices. If the current flowed in a spiral pattern (option B), the device would not function properly. Option C states that the current travels in one direction, which is true but does not specify that the direction is constantly changing. Option D is incorrect as the current in these devices does not travel in two distinct directions.