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[[/Magnetic field of straight conductor]]: 
  * Amplitude of [[/magnetic field strength]] increases linearly inside the wire with current, and then reduces with the distance from a conductor surface; the shape is similar for flux density  (but scaled accordingly by permeability). At the opposite side of the wire the field direction is reversed, so for "negative" distance the field can be assumed to have negative value, as indicated by the dotted arrows.

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{{tag> Magnetic_field_of_straight_wire Magnetic_field_of_straight_conductor Magnetic_field Straight_wire Straight_conductor Ampere_law Files}}