In a free-space electromagnetic wave, RMS electric-field strength is 6 V/m. The peak magnetic-field strength is:
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In a free-space electromagnetic wave, RMS electric-field strength is 6 V/m. The peak magnetic-field strength is:

G1 Physics · Accepted Answer

Step 1: E₀ = √2 Eᵣₘₛ = 6√2 V/m. Step 2: Plane-wave field amplitudes satisfy E₀ = cB₀. Step 3: B₀ = 6√2/(3 × 10⁸) = 2.83 × 10⁻⁸ T. Correct B. Final answer: (B) 2.83 × 10⁻⁸ T.