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The instantaneous electric and magnetic fields created at a distance r by a point source at the origin are given by 

Where ω, A, B are constants and the unit vectors from an orthonormal set. The time averaged power radiated by the source is .
  • a)
  • b)
  • c)
    C2AB
  • d)
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
The instantaneous electric and magnetic fields createdat a distance r ...
Given that

Pointing vector (Energy per unit time per unit area)


We know that 

=> The time averaged power radiated by the source is = <S>. A = AB C2
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