Magnetomotive force (mmf) is required to drive the magnetic flux in the magnetic circuit.. Mmf is caused by a current flowing through one or more turns.
Title video presenters 21100 practicalexercise 1 (mmf optional exercise) midface and mandible—fracture—mandibulomaxillary techniques iain mcvicar marcelo figari. When transformer loaded i2setup mmf = n2i2which produces a flux 𝜑2 in theoppositedirection ofthemainflux𝜑𝑚 originallysetup bytheprimary magnetisingcurrentwhichresults incretin.