ASVAB Practice Test

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Prepare for your ASVAB Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for 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!

Practice this question and more.

Why is copper often used in electrical wiring?

It has a high resistance
It is a good conductor of electricity
It is a poor conductor of heat
It is inexpensive

The correct answer is: It is a good conductor of electricity

Copper is often used in electrical wiring because it is an excellent conductor of electricity. This means that it allows electricity to flow easily and efficiently through the wire, making it a practical and safe choice for conducting electricity in homes and other buildings. Option A is incorrect because high resistance would hinder the flow of electricity. Option C is incorrect because copper is a good conductor of heat, making it useful for cooking and other heat-based applications. Option D is incorrect because while copper may be more expensive than other metals, its superior conductivity and durability make it a valuable investment for electrical purposes.