What is the typical frequency of electrical systems in the U.S.?

What is the typical frequency of electrical systems in the U.S.?

• A. 50 Hertz
• B. 60 Hertz
• C. 70 Hertz
• D. 120 Hertz

Answer: (B)

The typical frequency of electrical systems in the U.S. is 60 Hertz, which means that the alternating current (AC) cycles through its complete waveform 60 times per second. This standard was established in the early 20th century and has been maintained ever since, as it provides a good balance between efficiency and the stability of electrical devices and systems. Using a frequency of 60 Hertz allows electrical appliances, motor speeds, and lighting systems to function efficiently within the designed parameters, minimizing flicker and maximizing performance. In contrast, other frequencies like 50 Hertz are common in parts of Europe and Asia, while the others mentioned are not standard and are rarely utilized in electrical systems. Therefore, 60 Hertz is the correct frequency for electrical systems in the U.S.

The typical frequency of electrical systems in the U.S. is 60 Hertz, which means that the alternating current (AC) cycles through its complete waveform 60 times per second. This standard was established in the early 20th century and has been maintained ever since, as it provides a good balance between efficiency and the stability of electrical devices and systems.

Using a frequency of 60 Hertz allows electrical appliances, motor speeds, and lighting systems to function efficiently within the designed parameters, minimizing flicker and maximizing performance. In contrast, other frequencies like 50 Hertz are common in parts of Europe and Asia, while the others mentioned are not standard and are rarely utilized in electrical systems. Therefore, 60 Hertz is the correct frequency for electrical systems in the U.S.