The Amplitude of the Electric Field Component of an Electromagnetic

question 32

Multiple Choice

The amplitude of the electric field component of an electromagnetic wave is increased from E to 3E. What is the corresponding change in the intensity of the wave?

• A)The intensity is unchanged by the increase in E.
• B)The intensity increases by a factor of nine.
• C)The intensity increases by a factor of three.
• D)The intensity decreases by a factor of three.
• E)The intensity decreases by a factor of nine.

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