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Wave amplitude

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  • How much energy is carried by an electromagnetic wave?

  • It is clear, from the above, that half the energy in an electromagnetic wave is carried by the electric field, and the other half is carried by the magnetic field. As an electromagnetic field propagates it transports energy.

  • What determines the energy of a wave?

  • The wave energy is determined by the wave amplitude. Figure 16.4. 1: Energy carried by a wave depends on its amplitude. With electromagnetic waves, doubling the E fields and B fields quadruples the energy density u and the energy flux uc.

  • What is the relationship between electromagnetic waves and electric waves?

  • so that. Since half the energy in an electromagnetic wave is carried by the electric field, and the other half is carried by the magnetic field, it is conventional to convert the above expression into a form involving both the electric and magnetic field strengths.

  • How does amplitude affect the energy of electromagnetic waves?

  • In electromagnetic waves, the amplitude is the maximum field strength of the electric and magnetic fields ((Figure)). The wave energy is determined by the wave amplitude. Energy carried by a wave depends on its amplitude. With electromagnetic waves, doubling the E fields and B fields quadruples the energy density u and the energy flux uc.

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