The quantity w L is
analogous to the resistance and is called inductive reactance, denoted
by XL:
XL = w L
(7 13)
The amplitude of the current is, then
m
m
L
v
i
=X
(7 14)
The dimension of inductive reactance is the same as that of resistance
and its SI unit is ohm (W) The inductive reactance limits the current in a
purely inductive circuit in the same way as the resistance limits the
current in a purely resistive circuit