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Answer :
The intensity of an electromagnetic wave is the average power transmitted per unit area perpendicular to the direction of wave propagation. The intensity of the electromagnetic wave is 83.0 W/m².
The intensity of an electromagnetic wave is the average power transmitted per unit area perpendicular to the direction of wave propagation. It can be calculated using the formula:
Intensity (I) = (1/2) * ε₀ * c * E²
where ε₀ is the vacuum permittivity (8.854 × 10⁻¹² C²/Nm²), c is the speed of light in a vacuum (3.0 × 10⁸ m/s), and E is the magnitude of the electric field.
Electric field magnitude (E) = 176.8 N/C
Substituting the values into the formula, we have:
Intensity (I) = (1/2) * (8.854 × 10⁻¹² C²/Nm²) * (3.0 × 10⁸ m/s) * (176.8 N/C)²
Simplifying the expression, we find:
Intensity (I) = 83.0 W/m²
Therefore, the intensity of the electromagnetic wave is 83.0 W/m².
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