If a Beam of Electromagnetic Radiation Has an Intensity of 120

question 42

Multiple Choice

If a beam of electromagnetic radiation has an intensity of 120 W/m², what is the maximum value of the electric field? (c = 3.0 x 10⁸ m/s, μ₀ = 4π × 10^-7 T ∙ m/A, ε₀ = 8.85 × 10^-12 C²/N ∙ m²)

• A) 1.5 kV/m
• B) 1.0 µT
• C) 1.0 µV/m
• D) 0.30 kV/m
• E) 0.0032 V/m

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