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Questions and Answers
What is the equation of a plane progressive electromagnetic wave?
What is the equation of a plane progressive electromagnetic wave?
- $E_n = -E_0\sin(kz - \omega t)$, $B_y = B_0\sin(kz - \omega t)$ (correct)
- $E_n = -E_0\cos(kz + \omega t)$, $B_y = B_0\cos(kz + \omega t)$
- $E_n = E_0\sin(kz + \omega t)$, $B_y = B_0\sin(kz + \omega t)$
- $E_n = E_0\cos(kz - \omega t)$, $B_y = B_0\cos(kz - \omega t)$
What is the relationship between the frequency of an electromagnetic wave and the frequency of oscillation of charge?
What is the relationship between the frequency of an electromagnetic wave and the frequency of oscillation of charge?
- The frequency of the electromagnetic wave is inversely proportional to the frequency of oscillation of charge.
- The frequency of the electromagnetic wave is double the frequency of oscillation of charge.
- The frequency of the electromagnetic wave is half the frequency of oscillation of charge.
- The frequency of the electromagnetic wave is equal to the frequency of oscillation of charge. (correct)
What type of modulation uses radio waves in the range from 530kHz to 1710kHz?
What type of modulation uses radio waves in the range from 530kHz to 1710kHz?
- Frequency Modulation (FM)
- Pulse Code Modulation (PCM)
- Amplitude Modulation (AM) (correct)
- Phase Modulation (PM)
At what speed do electromagnetic waves propagate through space?
At what speed do electromagnetic waves propagate through space?
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What vectors are perpendicular to each other and at right angles to the direction of propagation in an electromagnetic wave?
What vectors are perpendicular to each other and at right angles to the direction of propagation in an electromagnetic wave?
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