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(a) Calculate the (time-averaged) energy density of an

Chapter 9, Problem 21P

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QUESTION:

Problem 21P

(a) Calculate the (time-averaged) energy density of an electromagnetic plane wave in a conducting medium (Eq. 9.138). Show that the magnetic contribution always dominates.

(b) Show that the intensity is

Equation 9.138

Questions & Answers

QUESTION:

Problem 21P

(a) Calculate the (time-averaged) energy density of an electromagnetic plane wave in a conducting medium (Eq. 9.138). Show that the magnetic contribution always dominates.

(b) Show that the intensity is

Equation 9.138

ANSWER:

Solution 21P

Step 1 of 4:

In part (a), our aim is to find the time-averaged energy density of an electromagnetic plane wave in a conducting medium and to show that the magnetic contribution will always dominate.

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