Three inductors are connected in parallel. Inductor 1 has an inductance of 2.5 H, Inductor 2 has an inductance of 1.8 H, and Inductor 3 has an inductance of 1.2 H. What is the total inductance of this circuit?
L_T=\frac{1}{\frac{1}{2.5 ~\mathrm{H}}+\frac{1}{1.8~ \mathrm{H}}+\frac{1}{1.2~ \mathrm{H}}}
L_T=\frac{1}{(1.788) \frac{1}{H}}
\mathrm{L}_{\mathrm{T}}=0.559 ~\mathrm{H}