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In a plane electromagnetic wave, the electric field of amplitude 1 V/m varies with time in free space.

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The average energy density of magnetic field is (in J/m)

  • 8.86 *10-12
  • 17.72 *10-12
  • 1.11 *10-12
  • 4.43 *10-12
  • 2.21 *10-12

I need an answer with full explanation and steps!!!!!!!

PLS ANSWER FAST!!!!!!!winkheart

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