West Virginia Barber Written Practice Exam

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Prepare for the West Virginia Barber Written Exam with comprehensive quizzes and study materials. Enhance your understanding through multiple-choice questions and in-depth explanations designed to boost your confidence on test day.

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What is an electrical current that switches its flow back and forth in a circuit?

Ac (Alternating current)
Dc (Direct current)
GFI (Ground Fault Interrupters)
Ohm

The correct answer is: Ac (Alternating current)

An electrical current that switches its flow back and forth in a circuit is called Alternating Current (AC). AC is the type of electrical current commonly used in households and businesses because it can easily be converted to different voltages and is more efficient for long-distance power transmission compared to Direct Current (DC). Direct Current (DC) flows continuously in one direction and is commonly used in batteries and electronic devices. Ground Fault Interrupters (GFI) are devices meant to protect against electrical shock by quickly cutting off power in the event of a ground fault. Ohm is a unit of electrical resistance.