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22 wrz 2023 · Electrical Tutorial about AC Inductance and the Properties of AC Inductance including Inductive Reactance in a Single Phase AC Circuit
Inductive reactance is the property of an inductive coil that resists the change in alternating current (AC) through it and is similar to the opposition to direct current (DC) in a resistance.
Inductive reactance can be calculated using this formula: X L = 2πfL; The angular velocity of an AC circuit is another way of expressing its frequency, in units of electrical radians per second instead of cycles per second. It is symbolized by the lowercase Greek letter “omega,” or ω. Inductive reactance increases with increasing ...
Read about AC Circuit Equations (Useful Equations And Conversion Factors) in our free Electronics Textbook.
An inductor rated at 4 Henrys is subjected to a sinusoidal AC voltage of 24 volts RMS, at a frequency of 60 hertz. Write the formula for calculating inductive reactance (X L), and solve for current through the inductor.
12.1 AC Sources In Chapter 10 we learned that changing magnetic flux can induce an emf according to Faraday’s law of induction. In particular, if a coil rotates in the presence of a magnetic field, the induced emf varies sinusoidally with time and leads to an alternating current (AC), and provides a source of AC power.
The quantity \(X_L\) is known as the inductive reactance of the inductor, or the opposition of an inductor to a change in current; its unit is also the ohm. Note that \(X_L\) varies directly as the frequency of the ac source—high frequency causes high inductive reactance.
