English: Illustration of a magnetic field around a wire conductor through which electric current is flowing. I is the direction of current flow. B is the magnetic field. The direction of the magnetic field obeys the right hand rule; if the wire is grasped by the right hand with the thumb in the direction of current flow, the fingers will point in the direction of the magnetic field lines. Traced by User:Stannered using en:OpenOffice.org Draw 2.0, from an original render by Wapcaplet
Русский: На иллюстрации показано магнитное поле, возникающее вокруг проводника, по которому течёт электрический ток. I указывает направление электрического тока, B - магнитного.
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Drawing of magnetic field around a current carrying wire
Líneas del campo magnético, B, inducido por una corriente eléctrica, I.