Capacitive, Inductive Reactance and Impedance Formula Sheet

The capacitor is an electrical component which stores charge in an electric field. When the capacitor is charged or discharged a current flows through it. Just like the resistance of a resistor tends to stop the flow of current, in capacitors the impedance plays the same role, This impedance is still measured in ohms but it is not constant and it depends on the frequency. In case of capacitors, the reactance is inversely related to the frequency and capacitance. Mathematically, Xc=1/(2πfC)

An inductor is an electronic component which stores electrical energy in a magnetic field when electric current flows through it. The inductive reactance, on the other hand, is a measure of the opposition offered to current flow. Mathematically, XL=2πfL

The formula sheet below displays an ac circuit along with the basic capacitive and inductive reactance formulas.

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