If frequency is 60 Hz, period?

If frequency is 60 Hz, period?

• A. 0.0017 s
• B. 1.67 s
• C. 0.0167 s
• D. 0.167 s

Answer: (C)

Period is the time for one cycle, and it is the inverse of frequency: T = 1/f. With a frequency of 60 Hz, the period is T = 1/60 seconds, which equals about 0.0167 seconds (16.7 milliseconds). This is the value that matches 60 Hz. The other numbers don’t fit because they correspond to different frequencies when you take the reciprocal. For example, 0.0017 s would imply a much higher frequency, 1.67 s a much lower one, and 0.167 s a frequency around 6 Hz.

Period is the time for one cycle, and it is the inverse of frequency: T = 1/f. With a frequency of 60 Hz, the period is T = 1/60 seconds, which equals about 0.0167 seconds (16.7 milliseconds). This is the value that matches 60 Hz. The other numbers don’t fit because they correspond to different frequencies when you take the reciprocal. For example, 0.0017 s would imply a much higher frequency, 1.67 s a much lower one, and 0.167 s a frequency around 6 Hz.