IMPEDANCE
Definition
An <IMPEDANCE> is a <Property> that is an expression of the opposition that an electronic component, circuit, or system offers to alternating and/or direct electric current.Impedance is a vector (two-dimensional)quantity consisting of two independent scalar (one-dimensional) phenomena: resistance and reactance. It is given by Z_ = U_/I_ where U_ is An <VOLTAGE> phasor and I_ is the electric current phasor