Approved Training Organization (ATO) Test 3 Alternating Current (AC) Practice

Which term describes a physical activity that rises and falls periodically?

Period Wave Waveform AC waveform

Correct Answer:

Wave

Explanation:

A wave is the actual activity that rises and falls periodically. It refers to the repeating oscillation or disturbance itself, like how voltage or current in AC can rise to a peak and fall back down in a regular pattern. A period, on the other hand, is the amount of time one complete cycle takes. A waveform is the graphical shape of that variation over time, not the activity itself. An AC waveform just specifies the kind of waveform associated with alternating current. So, the word that best describes the physical activity of rising and falling in a repeating way is a wave.

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