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The magnetic flux is given by:
where μ₀ is the permeability of free space and μr is the relative permeability of the core. magnetic circuits problems and solutions pdf
A magnetic circuit consists of a coil of 200 turns, a core with a cross-sectional area of 0.02 m², and a length of 0.8 m. The air gap length is 0.5 mm. If the current through the coil is 8 A, find the magnetic flux. Here is the PDF version of this blog
S = 0.5 / (4π x 10^(-7) x 1000 x 0.01) = 3980 A/Wb magnetic circuits problems and solutions pdf
MMF = NI = 500 x 10 = 5000 A-turns
