The Magnetic Field of an Electromagnetic Wave Has a Peak

question 40

Multiple Choice

The magnetic field of an electromagnetic wave has a peak value of 5.0 × 10^-10 T. What is the intensity of the wave? (c = 3.0 x 10⁸ m/s, c = 3.00 × 10⁸ m/s, μ₀ = 4π × 10^-7 T ∙ m/A, ε₀ = 8.85 × 10^-12 C²/N ∙ m²)

• A) 1.0 × 10^-13 W/m²
• B) 1.5 × 10^-5 W/m²
• C) 3.0 × 10^-5 W/m²
• D) 2.0 × 10^-13 W/m²
• E) 7.5 × 10⁵ W/m²

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