Which one of the following statements is true of an electromagnetic (EM) wave? OEM waves carry electrical charge. EM waves consist of transverse oscillating electric and magnetic fields. OEM waves do not carry energy. EM waves travel at different speeds in a vacuum, depending on their frequency.
Which one of the following statements is true of an electromagnetic (EM) wave? OEM waves carry electrical charge. EM waves consist of transverse oscillating electric and magnetic fields. OEM waves do not carry energy. EM waves travel at different speeds in a vacuum, depending on their frequency.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
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
Transcribed Image Text:**Electromagnetic Waves: Understanding Their Properties**
*Question: Which one of the following statements is true of an electromagnetic (EM) wave?*
**Answer Choices:**
1. EM waves carry electrical charge.
2. EM waves consist of transverse oscillating electric and magnetic fields.
3. EM waves do not carry energy.
4. EM waves travel at different speeds in a vacuum, depending on their frequency.
---
**Explanation:**
Electromagnetic (EM) waves are a fundamental concept in both physics and engineering. Understanding their properties is crucial for various fields including telecommunications, medical imaging, and astronomy.
Let's analyze each statement:
1. **EM waves carry electrical charge.**
- This statement is false. EM waves themselves do not carry charge. They are generated by the acceleration of charges but do not carry charge themselves.
2. **EM waves consist of transverse oscillating electric and magnetic fields.**
- This statement is true. EM waves are characterized by oscillations of electric and magnetic fields, which are perpendicular to the direction of the wave's propagation and to each other.
3. **EM waves do not carry energy.**
- This statement is false. EM waves do carry energy. The energy of an EM wave is proportional to its frequency and amplitude.
4. **EM waves travel at different speeds in a vacuum, depending on their frequency.**
- This statement is false. In a vacuum, all EM waves travel at the same speed, which is the speed of light (approximately \(3 \times 10^8\) meters per second).
**Conclusion:**
The correct and true statement regarding electromagnetic waves is:
- **EM waves consist of transverse oscillating electric and magnetic fields.**
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