Reactance
Reactance is the imaginary part of impedence and signifies the opposition to the flow of alternating current due to capacitance or inductance in a circuit. Reactance (X) can be classified into capacitive reactance (Xc) and inductive reactance (XL)L.
Capacitance Reactance
Capacitance reactance is denoted by XC.
Here, w is the angular frequency, and C is the capacitance.
The negative sign in the capacitive reactance formula indicates that in a capacitor, the current leads the voltage in terms of phase.
Inductance Reactance
Inductance Reactance is denoted by XL.
The positive sign in the inductive reactance formula signifies that in an inductor, the current lags behind the voltage in terms of phase.
Sinusoidal Steady State Analysis – Electric circuits
In steady state (the fully charged state of the cap), current through the capacitor becomes zero. The sinusoidal steady-state analysis is a key technique in electrical engineering, specifically used to investigate how electric circuits respond to sinusoidal AC (alternating current) signals. This method simplifies the intricate details involved in time-varying AC circuits by representing voltages and currents as phasors—complex quantities that succinctly convey both amplitude and phase information.
Table of Content
- Sinusoidal Steady State Analysis
- Sinusoidal Source
- Derivation
- V-I Relation for an Inductor
- V-I Relationship for a Capacitor
- Frequency Response
- Bode Plots
- Examples