Reluctance (S), number of turns (N), and inductance (L) of a magnetic circuit are related by the equation.

\(N = \sqrt {\frac{L}{S}} \)

\(S = \frac{{{N^2}}}{L}\)

\(L = \frac{S}{{{N^2}}}\)

\(L = \frac{NI}{S}\)

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