What Is the Maximum Value of The $\vec { B }$

question 30

Multiple Choice

What is the maximum value of the $\vec { B }$ field at a distance of 2.5 m from a light bulb that radiates 100 W of single-frequency sinusoidal electromagnetic waves uniformly in all directions? (ε₀ = 8.85 × 10^-12 C²/N ∙ m²,μ₀ = 4π × 10^-7 T ∙ m/A,c = 3.0 × 10⁸ m/s)

• A)0.10 μT
• B)0.40 μT
• C)0.50 μT
• D)0.60 μT
• E)0.80 μT

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