Power and Electric Field problem

AI Thread Summary
The peak electric field at a distance of 2m is 2.5V/m, and the discussion revolves around calculating the power of the light source. It is suggested that the power radiates uniformly in all directions, implying it spreads over an expanding sphere. The energy flux S, which relates to the electric field, is referenced as a key concept for solving the problem. Participants express gratitude for helpful resources, including links to educational material. The conversation emphasizes the importance of understanding electromagnetic wave properties in determining power.
kranav
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Homework Statement



The peak electric field produced by the raditation at a distance of 2m is 2.5V/m. What is the power of the light source?

Homework Equations



no clue

The Attempt at a Solution



no clue
 
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Take a look at this
http://electron9.phys.utk.edu/phys135d/modules/m10/emwaves.htm
down to "magnitude of the energy flux S" where it gives the energy of the electromagnetic wave per square meter per second in terms of E.

If you don't know otherwise, I would assume the source radiates in all directions so the power of the lights source is spread over an expanding sphere.
 
Last edited by a moderator:
Delphi51 said:
Take a look at this
http://electron9.phys.utk.edu/phys135d/modules/m10/emwaves.htm
down to "magnitude of the energy flux S" where it gives the energy of the electromagnetic wave per square meter per second in terms of E.

If you don't know otherwise, I would assume the source radiates in all directions so the power of the lights source is spread over an expanding sphere.

Hello!
Thanks a bunch, it really helped.
 
Last edited by a moderator:
Most welcome! Wikipedia is powerfully helpful.
 

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