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.
Φ = MMF / S = 1600 / 5969 = 0.268 Wb
The magnetic flux is given by:
S_air = lg / (μ₀ * A) = 0.0005 / (4π x 10^(-7) x 0.02) = 1989 A/Wb
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S = S_core + S_air
The MMF is given by:
The reluctance of the magnetic circuit is given by: