West Virginia Barber Written Practice Exam 2025 – Complete Study Resource

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Question: 1 / 400

Which part of the scalp and facial high-frequency machine is made of glass?

Comb

Electric current

Electrode

The correct answer is C. Electrode. In a scalp and facial high-frequency machine, the part made of glass is the electrode. The electrode is the component that emits the high-frequency current onto the skin during the treatment. It is usually made of glass to allow the current to pass through and treat the skin effectively.

Choices A, B, and D are incorrect because they do not refer to the glass component of the machine. The comb (Choice A) is typically made of plastic or metal, the electric current (Choice B) flows through the electrode but is not made of glass itself, and the handle (Choice D) is usually made of plastic or another non-conductive material.

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