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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Definitions:

Consumer's Surplus

The variance between what consumers are prepared and capable of spending for a product or service and the actual sum they end up paying.

Price of X

The cost or monetary value associated with acquiring, producing, or selling a good or service named X.

Quasilinear Preferences

Preferences characterized by a linear relationship in one good and non-linear in others, implying constant marginal utility for the linear good.

Consumer Surplus

The gap between the total price consumers are ready and able to spend for a good or service and what they actually spend.