AC Theory

AC (Alternating Current) Theory explains how electrical energy flows through circuits where the current changes direction periodically, like in household outlets. Unlike DC (Direct Current), which flows steadily in one direction, AC's voltage and current vary sinusoidally over time. This variation allows efficient transmission of electricity over long distances and enables the operation of many electronic devices. Key concepts include frequency (how often the current changes direction per second), amplitude (the maximum voltage or current), and impedance (resistance to AC flow). AC Theory helps in designing and analyzing circuits to ensure devices operate safely and efficiently.