North Dakota Barber Practice Exam

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Prepare for the North Dakota Barber Test with flashcards and multiple-choice questions. Each question comes with hints and explanations. Get ready to ace your exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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The polarity of an electric current indicates what?

Its voltage
Its speed
Its strength
Negative/Positive pole

The correct answer is: Negative/Positive pole

An electric current can be either positive or negative, but without context or a reference, it is difficult to determine which one it is. The polarity of an electric current refers to the direction of the flow of electrons within the current. This can be determined by identifying the negative and positive poles of the circuit. Options A, B, and C are incorrect as they describe different aspects of an electric current that do not relate to its polarity.