QUESTION 9.11 Equality of electric and magnetic energy densities. The instantaneous electric and magnetic energy densities, we and wm, of a uniform plane time-harmonic electromagnetic wave traveling through air are the same at (A) all points of space and all instants of time. (B) all points of space and some (not all) characteristic instants of time. (C) all instants of time and some (not all) characteristic points of space. (D) no points of space and no instants of time.
QUESTION 9.11 Equality of electric and magnetic energy densities. The instantaneous electric and magnetic energy densities, we and wm, of a uniform plane time-harmonic electromagnetic wave traveling through air are the same at (A) all points of space and all instants of time. (B) all points of space and some (not all) characteristic instants of time. (C) all instants of time and some (not all) characteristic points of space. (D) no points of space and no instants of time.
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Transcribed Image Text:QUESTION 9.11 Equality of electric and magnetic energy densities.
The instantaneous electric and magnetic energy densities, we and wm, of a uniform
plane time-harmonic electromagnetic wave traveling through air are the same at
(A) all points of space and all instants of time.
(B) all points of space and some (not all) characteristic instants of time.
(C) all instants of time and some (not all) characteristic points of space.
(D) no points of space and no instants of time.
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