ohm's law 4 magnetic circuits

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what is the ohm's law for magnetics circuits???
 

When current reverse, the direction of the magnetic field also reverse.which means their is direct relation.
 

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    mohsin3069

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Ohm's law for Magnetic circuits:

the magnetomtive force(F)= the magnetic relactance(R)*the magnetic flux(φ)
 

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    mohsin3069

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When current reverse, the direction of the magnetic field also reverse.which means their is direct relation.
 

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    mohsin3069

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Φ=mmf/R where Φ is the magnetic Flux, mmf is the magnetomotive force, and R is the Reluctance.

Hope this helped!
 

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    mohsin3069

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Φ=mmf/R can be derived from Ampere Law. But this linearity is only true for air with infinite saturation and ferromagnetic material that not saturate .
 

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