Henry times angular frequency makes Ohm

inductive reactance = ωL = angular velocity x inductance


angular velocity = 2 times 3.14... times frequency = 2πf


R in series with L create a complex impedance:


(R,ωL) ie


(R,2πfL)


This is a vector. It's magnitude and angle depend on frequency.


See also rotating vectors (phasors).


See also:
Engineering Circuit Analysis - Hayt Jr, Kemmerly