86
Impedance, Z, can also be expressed as admittance, Y. Admittance is expressed
in terms of impedance, Z, by Y =
1
Z
.
Y =
1
Z
=
1
R+jX
=
R
R
2
+X
2
− j
X
R
2
+X
2
OR
Y =
1
Z
=
1
|Z|∠θ
= |Y|∠(−θ
)
For parallel connected circuits, it is better to use admittance, Y.
G : Conductance
B : Susceptance
|Y|: Admittance