SI Versus CGS Units
The SI unit of magnetomotive force is the Ampere (A), represented by a steady, direct electric current of one Ampere flowing in a single-turn loop of electrically conducting material in a vacuum.
The CGS unit of magnetomotive force is the Gilbert (Gi), established by the IEC in 1930 . The Gilbert is defined differently, and is a slightly smaller unit than the Ampere. The unit is named after William Gilbert (1544–1603) English physician, astronomer and natural philosopher.
The conversion factor between the SI and CGS units is (≈ 0.795774715) Ampere for every Gilbert.
Between the CGS unit and SI unit, the MKS unit magnetomotive force was the Ampere-turn AT. The unit is still often described as Ampere-turns, since the value in SI units (Ampere) is the product of the current in a coil times the number of turns of the coil that contribute to the total magnetomotance.
Read more about this topic: Magnetomotive Force
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