A Sinusoidal Electromagnetic Wave Has an Electric Field Whose Rms

question 11

Multiple Choice

A sinusoidal electromagnetic wave has an electric field whose rms value is 100 V/m.What is the instantaneous rate S of energy flow for this wave?

• A)1.7 * 10^-4 W/m²
• B)13 W/m²
• C)27 W/m²
• D)1.0 * 10⁵ W/m²
• E)4.0 * 10¹⁰ W/m²

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