What is apparent permeability μ<sub>app</sub>?
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A. The ratio of the inductance of the measuring coil is as shown below; when there is a magnetic core to the inductance and when there is no magnetic core.


  • L = Inductance of the measuring coil with a magnetic core (H)
  • L0 = Inductance of the measuring coil without a magnetic core (H)

* Terminology related to ferrites can be found in the website in ”Terms Definitions and Explanations” under ”Ferrite Summary”.
* The symbol and the catalog of this data are in accordance with IEC Publication 60401-3.
* Our terminology and settings were established by reference to JIS C 2560-1,-2.