CSLB Class B General Contractor's License Practice Exam

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Prepare for the CSLB Class B General Contractor's License Test with interactive flashcards and multiple choice questions. Each question offers hints and explanations to enhance your understanding and readiness for the exam.

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What is often used to check the voltage levels in electrical systems?

Amperemeter
Voltmeter
Ohmmeter
Frequency meter

The correct answer is: Voltmeter

The voltmeter is specifically designed to measure the voltage levels across two points in an electrical circuit. It provides readings in volts, which is the standard unit for voltage. By connecting the probes of a voltmeter to the points of interest, you can obtain an accurate measurement of the electrical potential difference, which is critical for ensuring that electrical systems are functioning properly and safely. In contrast, an amperemeter is used to measure current (in amperes), rather than voltage. An ohmmeter measures resistance (in ohms), which is related to how much the flow of electric current is opposed. A frequency meter measures the frequency of an electrical signal (in hertz), which is not related to voltage measurements. Each of these instruments serves a specific purpose in electrical work, but for checking voltage levels, the voltmeter is the correct tool to use.