Intensity: A sinusoidal electromagnetic wave has a peak electric field of 8.00 kV/m. What is the intensity of the wave? (c = 3.0 × 108 m/s, ?0 = 4? × 10-7 T ? m/A, ?0 = 8.85 × 10-12 C2/N ? m2)
A. 170 kW/m2
B. 85 kW/m2
C. 21 kW/m2
D. 11 kW/m2
Answer: B
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