A Radio Wave Transmits 4 $\mu$ ₀ = 4 $\pi$ *10^-7 T

question 13

Multiple Choice

A radio wave transmits 4.8 W/m² average power per unit area. What is the peak value of the associated magnetic field? ( $\mu$ ₀ = 4 $\pi$ *10^-7 T.m/A and c = 3.00 * 10⁸ m/s)

• A) 1.0 *10^-7 T
• B) 8.4 *10^-3 T
• C) 2.0 *10^-7 T
• D) 30 T

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