Oklahoma Locksmith Practice Exam

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In electrical terms, what does 'VAC' stand for?

  1. Variable Alternating Current

  2. Voltage Alternating Current

  3. Volts of Alternating Current

  4. Varying Amperage Current

The correct answer is: Volts of Alternating Current

'VAC' stands for 'Volts of Alternating Current,' which is a standard unit of measurement used to indicate the voltage level in an alternating current system. Alternating Current (AC) is an electric current that reverses direction periodically, and the term 'volts' denotes the electrical potential difference that drives the current flow. When specifying 'VAC,' it gives a clear indication of how much voltage is being supplied in an AC circuit, which is essential information for electricians and locksmiths involved in security systems that use electrical components. Understanding this terminology ensures that one can correctly identify and manage the electrical aspects of security devices, such as electric locks and alarms, which often operate on AC power sources.

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