You all remember Ohm's law and the definition of electrical resistance as the ability of a circuit to resist the flow of electrical current. Although useful, Ohm's law applies to only one circuit element and assumes it to be an ideal resistor. Real-world circuit elements are more complex and exhibit resistive, capacitive, and inductive behavior that together define its impedance.

You all remember Ohm's law and the definition of electricalresistance as the ability of a circuit to resist the flow ofelectrical current. Although useful, Ohm's law applies to only onecircuit element and assumes it to be an ideal resistor. Real-worldcircuit elements are more complex and exhibit resistive,capacitive, and inductive behavior that together define itsimpedance.