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      Question

      The electric and magnetic fields of an electromagnetic

      wave are _____________
      A in phase and perpendicular to each other Correct Answer Incorrect Answer
      B out of phase and not perpendicular to each other Correct Answer Incorrect Answer
      C in phase and not perpendicular to each other Correct Answer Incorrect Answer
      D out of phase and perpendicular to each other Correct Answer Incorrect Answer

      Solution

      The electric field and magnetic field of an electromagnetic wave are perpendicular (at right angles) to each other. They are also perpendicular to the direction of the EM wave.

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