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I have read Bio-Savar , Amper law (also maxwell) about Magnetic fields

but all of them had I

bio-savar :

B = [tex]\frac{[tex]\mu[/tex]

_{0}}{4[tex]\pi[/tex]

}[/tex] [tex]\frac{ids Sin\theta}{r

^{2}}[/tex]

Amper :

[tex]\int[/tex] B.ds = I

_{in}[tex]\mu[/tex]

_{0}

but what about a Electron moving in a line path ? how big will be its magnetic field ? it musnt be permenent though

and what about a Electron spining around itself ? this time it must be permenant but how big what are the vectors ?

Thanks