The frequency of an alternating current is 3 Hz. It implies that

Frequency is defined as the number of cycles or waves passing a given point during a one-second time interval. In the context of alternating current (AC), frequency represents the rate at which the current changes direction and completes a full sine wave cycle per second [3]. The international unit of measurement for frequency is the Hertz (Hz), where 1 Hz is strictly equivalent to 1 cycle per second. Therefore, if an alternating current has a frequency of 3 Hz, it implies that the periodic event or waveform completes exactly 3 cycles per second [1]. This fundamental relationship means that the number of Hertz directly corresponds to the number of cycles occurring in a one-second duration.

Sources

1. [3] https://en.wikipedia.org/wiki/Alternating_current
2. [1] FUNDAMENTALS OF PHYSICAL GEOGRAPHY, Geography Class XI (NCERT 2025 ed.) > Chapter 13: Movements of Ocean Water > Characteristics of Waves > p. 109