True or False: One hertz (Hz) equals one complete cycle per second.

True or False: One hertz (Hz) equals one complete cycle per second.

• A. True
• B. False
• C. It depends on waveform
• D. Not defined

Answer: (A)

Frequency is the rate at which complete cycles occur in one second. One hertz means one complete cycle per second, so if a signal finishes a full cycle in exactly one second, its frequency is 1 Hz. The relationship f = 1/T ties frequency to the period T, the time for one cycle; a 1-second period gives f = 1/1 s = 1 Hz. The actual shape of the waveform (sine, square, etc.) doesn’t change this count—what matters is how long it takes to complete one cycle. Therefore, 1 Hz correctly equals one complete cycle per second. The other options aren’t correct because the frequency remains defined by the cycle rate regardless of waveform, and it isn’t undefined.

Frequency is the rate at which complete cycles occur in one second. One hertz means one complete cycle per second, so if a signal finishes a full cycle in exactly one second, its frequency is 1 Hz. The relationship f = 1/T ties frequency to the period T, the time for one cycle; a 1-second period gives f = 1/1 s = 1 Hz. The actual shape of the waveform (sine, square, etc.) doesn’t change this count—what matters is how long it takes to complete one cycle. Therefore, 1 Hz correctly equals one complete cycle per second. The other options aren’t correct because the frequency remains defined by the cycle rate regardless of waveform, and it isn’t undefined.