In AM radio, what part of the carrier wave is varied?

Its amplitude.

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  1. Its amplitude ✔
  2. Its antenna length
  3. Its call sign

Why: In amplitude modulation, the strength or amplitude of the carrier wave is varied by the signal.

Huh, didn't know that: In amplitude modulation, the strength or amplitude of the carrier wave is varied by the signal.

The dad joke
AM radio really amplifies its feelings.
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References

Answer: Its amplitude. In amplitude modulation, the strength or amplitude of the carrier wave is varied by the signal.

  1. Radio en.wikipedia.org/wiki/Radio
    in an AM transmitter, the amplitude (strength) of the radio carrier wave is varied by the modulation signal
    Checked 2026-11-07.

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