CWEA Maintenance Technologist Practice Test

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Study for the CWEA Maintenance Technologist Test. Prepare with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

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What kind of current is stored in a 9-volt battery?

Alternating current
High-frequency current
Direct current
Variable current

The correct answer is: Direct current

A 9-volt battery is designed to provide direct current (DC). Direct current refers to a type of electrical current that flows consistently in one direction, which is characteristic of the output from batteries. This means that the voltage remains constant over time, allowing for stable operation of devices powered by the battery. In contrast, alternating current (AC) constantly changes direction and is typically used for power delivery in homes and businesses. High-frequency current generally refers to electrical signals that oscillate at a high frequency, often used in radio communications or specific electronic applications. Variable current could imply a current that changes in amplitude or frequency, which is not relevant in the context of a standard 9-volt battery. Therefore, the consistent nature of the output from a 9-volt battery aligns it specifically with direct current, making this the correct answer.