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JEE Main202116 Mar 2021Morning ShiftPhysicsElectromagnetic WavesActual

For an electromagnetic wave travelling in free space, the relation between average energy densities due to electric U e and magnetic U m fields is :

Options

  1. AU e = U m
  2. BU e > U m
  3. CU e < U m
  4. DU e ≠ U m

Correct answer

A. U e = U m

Step-by-step solution

In EMW , Average energy density due to electric U e and magnetic U m fields is same.

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