If the Intensity of an Electromagnetic Wave Is 80 MW/m²,what

question 52

Multiple Choice

If the intensity of an electromagnetic wave is 80 MW/m²,what is the amplitude of the magnetic field of this wave? (c = 3.0 × 10⁸ m/s,μ₀ = 4π × 10^-7 T ∙ m/A, ε₀ = 8.85 × 10^-12 C²/N ∙ m²)

• A)0.82 mT
• B)0.33 µT
• C)10 T
• D)14 T
• E)0.58 mT

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