Derivation for Magnetic Dipole of Current Loop

[newbie101]

Hi All,

Please show me the derivation of the vector potentiol A for the magnetic dipole.
from equation 8.21 to 8.21a
This page is taken from Sadikus book.

** i tried all day and couldn't manage to obtain it. i need the derivation step by step **

thanks
newbie

http://img.photobucket.com/albums/v712/newbie777/MagneticDipole.jpg

 

[Doc Al]

Here you go (this page and the next): http://www.physics.gla.ac.uk/~dland/ELMAG305/em11p/sld010.htm

 

[newbie101]

Thanks Doc

 

[newbie101]

Hi Again,

May I know how we obtain the distance p

http://img.photobucket.com/albums/v712/newbie777/a884e93d.jpg


also how did we obtain vector A

http://img.photobucket.com/albums/v712/newbie777/6c9d764b.jpg


I know this should be simple.. but I am just having problems getting here.. please help

thanks
newbie

 

[dextercioby]

It looks like the cosine law in a triangle.You should spot that triangle out from the drawing (check all slides).

And the magnetic potential is the solution of Poisson equation for magnetostatcs.


Daniel.

 

[newbie101]

gawd.. how could i miss that

 

[piash]

hi can i get the derivation(soft copy), newbie101?

 

[ZapperZ]

Please note that you're asking for something in a thread that was last active on May 3rd, 2005.

Zz.