IMPEDANCE AND ADMITTANCE
For each of the passive components the relationship between the voltage phasor
and the current phasor is algebraic. We now generalize for an arbitrary 2-terminal
element
(INPUT) IMPEDANCE
(DRIVING POINT IMPEDANCE)
The units of impedance are OHMS
Impedance is NOT a phasor but a complex
number that can be written in polar or
Cartesian form. In general its value depends
on the frequency
