Problem 4-3    Source:    Problem elaborated by the author of the site.

In the figure below, L₁ = 12 H,   L₂ = 6 H and L₃ = 12 H.

Calculate the total inductance of the circuit show in Figure 04-03.1 between points a and b.

Solution of the Problem 4-3

Note that all inductors are in parallel. However, simply apply the equation that determines the equivalent inductance of a parallel circuit, or:

Making the numerical substitution and solving the equation, we find: