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A point source of electromagnetic radiat...

A point source of electromagnetic radiation has an average power output of `800 W`. The maximum value of elecvtric field at a distance `4.0 m` from the source is

A

`64.7 `V/m

B

`57.8 `V /m

C

`56.72 ` V/m

D

`54.77` V/m

Text Solution

Verified by Experts

The correct Answer is:
D
`I=(P_(av))/(2pir^(2))(E_(0)^(2))/(mu_(0)c)`
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