S_air = lg / (μ₀ * A) = 0.0005 / (4π x 10^(-7) x 0.02) = 1989 A/Wb
Φ = MMF / S = 500 / 3980 = 0.1256 Wb
Magnetic circuits are an essential part of electrical engineering, and understanding the concepts and problems associated with them is crucial for designing and analyzing electrical systems. In this post, we discussed common problems and solutions related to magnetic circuits, including finding the magnetic flux, relative permeability, and air gap length. magnetic circuits problems and solutions pdf
Assuming μr = 1000, we get:
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. S_air = lg / (μ₀ * A) = 0
MMF = NI = 100 x 5 = 500 A-turns