Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)
Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)
1st Edition
ISBN: 9780078945830
Author: Charles William McLaughlin, Marilyn Thompson, Dinah Zike
Publisher: Glencoe Mcgraw-Hill
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Chapter 11.3, Problem 15R
To determine

To Explain: The difference between AM and FM radio.

To Draw: A sketch of how a carrier wave is modulated in AM and FM radio signals.

Expert Solution & Answer
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Explanation of Solution

Introduction:

The magnetic field that changes is generated by changing the electric field around a charge. Likewise, the electric field that changes is generated by changing the magnetic field around a charge. The electromagnetic waves are generated in an electric and magnetic field due to continuous charge.

Amplitude modulation (AM) wave:

The amplitude of the audio signal is modulated with the amplitude with the amplitude of the carrier (high frequency) signal.

Frequency modulation (FM) wave:

The amplitude of the audio signal is modulated with the frequency of the carrier (high frequency) signal.

The carrier wave is shown below:

  Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education), Chapter 11.3, Problem 15R , additional homework tip  1

Modulated AM wave is shown below:

  Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education), Chapter 11.3, Problem 15R , additional homework tip  2

Modulated FM wave is shown below:

  Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education), Chapter 11.3, Problem 15R , additional homework tip  3

Conclusion:

Hence, the difference between AM and FM waves are discussed. Sketch for both the FM and AM waves are drawn.

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What Are Electromagnetic Wave Properties? | Physics in Motion; Author: GPB Education;https://www.youtube.com/watch?v=ftyxZBxBexI;License: Standard YouTube License, CC-BY