2.1 Introduction
2.2 Generation of Electromagnetic Waves
2.2.1 Speed of Electromagnetic Waves
2.2.2 Direction of Propagation of Electromagnetic Waves
2.2.3 Doppler Effect of Electromagnetic Waves
2.3 The Electromagnetic Spectrum
2.4.1 Energy Carried by Electromagnetic Waves
2.4.2 Radiation Pressure
2. Summary
Unit 2 - Multiple Choice - Electromagnetic Waves Questions
Unit 2 - Multiple Choice - Electromagnetic Waves Answers
Unit 2.1 Multiple Choice Extended Questions - Waves
Unit 2.1 Multiple Choice Extended Answers-Waves
 

Unit 2 Electromagnetic Waves

2.2 Propagation of Electromagnetic Waves

2.2.2 Direction of Propagation of Electromagnetic Waves

 

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The electric and magnetic fields obey the right hand rule.

1. The electric and magnetic fields are perpendicular to each other and to the direction of travel.

2. The electric and magnetic fields are in phase.

3. Very far from the antenna, the field lines are flat over reasonably large areas and are called plane waves.

4. They are transverse waves.

5. They are field waves NOT matter waves and so can propagate in empty space.

 

Fig 2.2.1

Example 2: At a particular instant in time, a wave has its electric field pointing south and its magnetic field pointing up. In which direction is the wave traveling?

Answer: West.

 

     
Concept by Kishore Lal. Programmed by Kishore Lal... Copyright © 2015 Kishore Lal. All rights reserved.