Poynting vector and poynting theorem

Poynting vector and poynting theorem

When electromagnetic wave travels in space, it carries energy and energy density is always
associated with electric fields and magnetic fields.
The rate of energy travelled through per unit area i.e. the amount of energy flowing through
per unit area in the perpendicular direction to the incident energy per unit time is called poynting
vector.
Mathematically poynting vector is represented as

poynting theorem

poynting theorem

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

poynting theorem

poynting theorem

 

 

 

 

 

 

 

 

 

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