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The amplitude of electric field at a di...

The amplitude of electric field at a distance `r` from a point source of power `P` is (taking 100% efficiency).

A

`sqrt((P)/(2pir^(2)cepsi_(0)))`

B

`sqrt((P)/(4pir^(2)cepsi_(0)))`

C

`sqrt((P)/(8pir^(2)cepsi_(0)))`

D

`(P)/(2pir^(2)cepsi_(0))`

Text Solution

Verified by Experts

The correct Answer is:
A
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