Magnetic Circuits Problems And Solutions Pdf Review

The reluctance of the magnetic circuit is given by:

S = 3980 + 1989 = 5969 A/Wb

MMF = NI = 200 x 8 = 1600 A-turns

The total reluctance is:

μr = l / (μ₀ * A * S) = 1 / (4π x 10^(-7) x 0.05 x 10,000) = 1591.5

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The MMF is given by:

S = MMF / Φ = 5000 / 0.5 = 10,000 A/Wb

S_air = lg / (μ₀ * A) = 0.0005 / (4π x 10^(-7) x 0.02) = 1989 A/Wb

The magnetic flux is given by:

Rearranging and solving for μr, we get:

S = l / (μ₀ * μr * A)