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Electromagnetic Waves Quiz

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Questions and Answers

What is the equation of a plane progressive electromagnetic wave?

$E_n = E_0 \cos (ckz - \omega t)$, $B_y = B_0 \cos (ckz - \omega t)$

$E_n = -E_0 \sin (ckz - \omega t)$, $B_y = B_0 \sin (ckz - \omega t)$ (correct)

$E_n = -E_0 \cos (ckz + \omega t)$, $B_y = -B_0 \cos (ckz + \omega t)$

$E_n = E_0 \sin (ckz + \omega t)$, $B_y = B_0 \sin (ckz + \omega t)$

What is the frequency range for TV waves as mentioned in the text?

30MHz to 300MHz

900kHz to 1800kHz

530kHz to 1710kHz

54MHz to 890MHz (correct)

What type of modulation uses radio waves in the range from 530kHz to 1710kHz?

Amplitude Modulation (AM) (correct)

$QAM$ Modulation

Phase Modulation (PM)

Frequency Modulation (FM)

What is the relationship between the frequency of an electromagnetic wave and the frequency of oscillation of charge?

<p>They are directly proportional</p> Signup and view all the answers

What is the speed at which electromagnetic waves propagate through space, according to the text?

<p>$3\times10^8$ m/s</p> Signup and view all the answers

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