For an inductor made from magnetic core, with two air gaps of equal length g, exciting coil with 1000 turns, A=5cm∗5cm and g=1cm, what will be the coil inductance?

For an inductor made from magnetic core, with two air gaps of equal length g, exciting coil with 1000 turns, A=5cm∗5cm and g=1cm, what will be the coil inductance? Correct Answer 0.157H

Reluctance Rl=2g/μ0A and coil Inductance L=N2/Rl = N2μ0A/2g = (1000)2(4π∗10-7)(0.05)2/(2∗0.01) = 0.15708H.
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