To determine the normal frequency of alternating current (AC) power in the United States, let’s go through the following steps:
1. Understanding AC Power Frequency:
- AC power is the type of electricity that is delivered to homes and businesses.
- The frequency of AC power is the number of times the current changes direction per second, and it is measured in cycles per second, or Hertz (Hz).
2. Recognizing the Standard Frequency in the United States:
- Different countries use different frequencies for their AC power systems.
- For instance, many countries in Europe use a frequency of 50 Hz.
3. Identifying the Correct Frequency in the United States:
- In the United States, the standard frequency for AC power is set at 60 cycles per second (60 Hz). This has been the established norm for many years.
Given this information, the correct choice that matches the normal frequency of AC power in the United States is:
B. 60 cycles per second.
This concludes that the normal frequency of AC power in the United States is 60 cycles per second.
