Question

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

wavelength

waveform

frequency

curve

Answer 1

Answer;

Waveform

Step-by-step 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.