New Jersey State Board Esthetics Practice Exam

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Prepare for the New Jersey State Board Esthetics Exam with a comprehensive set of flashcards and multiple-choice questions. Each question includes hints and explanations. Get fully equipped for your esthetics licensure!

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What type of current is supplied by high frequency machines?

Direct current
Sinusoidal current
Alternating current
Pulsed current

The correct answer is: Sinusoidal current

High frequency machines supply alternating current. This type of current creates a rapid oscillation of electrical energy. In the context of esthetics, high frequency machines are widely used for various skin treatments, including acne management and skin rejuvenation. The alternating current produced by these machines generates a thermal effect upon penetrating the skin, which can lead to increased circulation, improved metabolism of skin cells, and enhanced healing processes. Additionally, alternating current allows for a smoother flow of electric energy, making it suitable for the delicate nature of skin treatments. The high frequency's ability to oscillate rapidly also contributes to its effectiveness in producing beneficial effects such as disinfection and stimulating cellular activity. Alternatives like direct current do not provide the same oscillatory benefits required for these treatments, while other variations like pulsed current and sinusoidal current serve different functions in the realm of electric therapies.