Arkansas State Barber Practice Exam

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The high frequency current commonly used in the barbershop is the:

Galvanic current
Direct current
Sinusoidal current
Tesla current

The correct answer is: Tesla current

Tesla current, also known as high frequency current, is the most commonly used current in a barbershop because it produces a high frequency vibration that is ideal for cutting hair. Galvanic current (A) is a direct current that is used for electrolysis and skincare treatments, making it unsuitable for hair cutting. Similarly, direct current (B) is not ideal for hair cutting as it produces a continuous flow of electricity. Sinusoidal current (C) is an alternating current used for medical treatments and is not suitable for hair cutting.