Problem 9.21 (a) Calculate the (time-averaged) energy density of an electromagnetic plane wave in a conducting medium (Eq. 9.138). Show that the magnetic contribution al- ways dominates. [Answer: (k²/2μw²) E² e−²K²] е (b) Show that the intensity is (k/2µw) E²e−2kz.

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Problem 9.21
(a) Calculate the (time-averaged) energy density of an electromagnetic plane wave
in a conducting medium (Eq. 9.138). Show that the magnetic contribution al-
ways dominates. [Answer: (k²/2μw²) E² e−²K²]
е
(b) Show that the intensity is (k/2µw) E²e−2kz.
Transcribed Image Text:Problem 9.21 (a) Calculate the (time-averaged) energy density of an electromagnetic plane wave in a conducting medium (Eq. 9.138). Show that the magnetic contribution al- ways dominates. [Answer: (k²/2μw²) E² e−²K²] е (b) Show that the intensity is (k/2µw) E²e−2kz.
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