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When E and B Are the Amplitudes of the Electric 14ε0E2\frac { 1 } { 4 } \varepsilon _ { 0 } E ^ { 2 }

Question 27

Multiple Choice

When E and B are the amplitudes of the electric and magnetic fields in an electromagnetic wave in vacuum,the total average energy density in the wave is


A) 14ε0E2\frac { 1 } { 4 } \varepsilon _ { 0 } E ^ { 2 } .
B) 12ε0E2\frac { 1 } { 2 } \varepsilon _ { 0 } E ^ { 2 } .
C) ε\varepsilon 0E2.
D) B2μ0\frac { B ^ { 2 } } { \mu _ { 0 } } .
E) EBμ0\frac { E B } { \mu _ { 0 } } .

Correct Answer:

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