The Rms Value of the Magnitude of the Magnetic Field

question 42

Multiple Choice

The rms value of the magnitude of the magnetic field in an electromagnetic wave is B_rms = 0.378 T.The average energy density of this wave is approximately

• A)114 kJ/m³
• B)28.4 kJ/m³
• C)31.8 kJ/m³
• D)67.8 kJ/m³
• E)56.9 kJ/m³

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