Resolved Problems about Inductors

Problem 4-1 Source: Problem elaborated by the author of the site.

Knowing that L₁ = 12 H, L₂ = 4 H and L₃ = 6 H calculate the total inductance of the circuit show in Figure 04-01.1 between the points a and b.

Solution of the do Problem 4-1

We easily realize that all inductors are in series. Thus, to find the equivalent inductance, all we need to do is add all circuit inductances, or:

L_eq = L₁ + L₂ + L₃

By doing the numerical substitution, we find:

L_eq = 12 + 4 + 6 = 22 henry

See the simplicity of the problem solution. And this holds for any number of inductors in a circuit, provided that the same meet in series.

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