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Questions and Answers
Which component(s) make up an Electro Magnetic wave?
Which component(s) make up an Electro Magnetic wave?
- Electrical only
- Neither Electrical nor Magnetic
- Magnetic only
- Both Electrical and Magnetic (correct)
What is the relationship between the Electric component, the Magnetic component, and Propagation of an Electro Magnetic wave?
What is the relationship between the Electric component, the Magnetic component, and Propagation of an Electro Magnetic wave?
- They are parallel to each other
- They are perpendicular to each other (correct)
- They are at an angle of 45 degrees to each other
- They have no relationship
What is the primary purpose of using Electro Magnetic waves in wireless communication?
What is the primary purpose of using Electro Magnetic waves in wireless communication?
- To transmit and receive information (correct)
- To create electricity
- To produce light
- To generate heat
Which one of the following statements is true about the wavelength of a wave?
Which one of the following statements is true about the wavelength of a wave?
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Which one of the following statements is true about the frequency of a wave?
Which one of the following statements is true about the frequency of a wave?
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What happens when two waves with components in the same direction interfere?
What happens when two waves with components in the same direction interfere?
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Study Notes
Components of Electromagnetic Waves
- An Electromagnetic wave consists of two components: Electric and Magnetic.
Relationship between Components and Propagation
- The Electric and Magnetic components of an Electromagnetic wave are perpendicular to each other and propagate in the direction perpendicular to both components.
- The Electric component and Magnetic component are in phase with each other, meaning they reach their maximum and minimum values at the same time.
Purpose of Electromagnetic Waves in Wireless Communication
- The primary purpose of using Electromagnetic waves in wireless communication is to transmit information wirelessly over long distances.
Wavelength of a Wave
- The wavelength of a wave is the distance between two consecutive points on the wave that are in phase with each other.
Frequency of a Wave
- The frequency of a wave is the number of oscillations or cycles per second, measured in Hertz (Hz).
Interference of Waves
- When two waves with components in the same direction interfere, they result in constructive interference, which increases the amplitude of the wave.
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