Capacitors have a special way of opposing alternating current (AC) which is called capacitive reactance. This is like an internal resistance in the capacitor which changes based on the frequency of the electricity flowing through it. Unlike normal resistance which stays the same, no matter how fast the electricity changes (frequency), capacitive reactance is affected […]
Reactance
Calculating Capacitance and Capacitive Reactance
A capacitor is a device that can store electric charge on its conductive plates. The amount of charge (Q) that a capacitor can store depends on the voltage difference between its plates. When a capacitor is connected to an alternating current (AC) circuit, its capacitance affects how well it can store and release charge as […]
Calculating Inductance and Inductive Reactance
An inductive coil generates a self-induced electromotive force (emf) opposing the initial emf in response to an AC supply. This phenomenon, termed inductive reactance, imposes limitations on the flow of time-varying current in the circuit. Inductors and Energy Storage Inductors, also known as chokes, are coils wound around air or ferromagnetic material to enhance their […]