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10 August, 05:33

A ___ is the shape of an electrical signal that varies over time.

wavelength

waveform

frequency

curve

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Answers (1)
  1. 10 August, 05:48
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    Answer;

    Waveform

    Explanation; Waveform is the shape of an electrical signal that varies over time. Frequency is the number of waveform cycles in one second. The frequency of a current is how many times one cycle of the waveform is repeated per second, and is measured in hertz.
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