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Questions  

The maximum electric field of a plane electromagnetic wave is 88 V/m. The average energy density is

a
3.4 ×10-8 Jm-3
b
13.7 ×10-8 Jm-3
c
6.8 ×10-8 Jm-3
d
1.7 ×10-8 Jm-3

detailed solution

Correct option is A

Average energy density = 12∈0E02=12 x 8.8 x 10-12 x 88 x 88=3.4 x 10-8 Jm-3

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