Inductive resistance.

Inductive reactance is the resistance of an inductor to alternating current. For direct current, the resistance of the inductor is zero, in reality it is equal to the active resistance of the wire.

The online calculator below allows you to find:
- Inductive resistance across frequency and inductance;
- Frequency through inductive reactance inductance;
- Inductance through frequency and inductive reactance.

Inductive reactance is the resistance that appears in circuits containing inductance. Inductance is a physical quantity that characterizes the ability of an electrical circuit to create a magnetic field when current flows.

When an alternating current passes through an inductive coil, a magnetic field arises in it, which also changes with time along with the current. A change in the magnetic field leads to the emergence of self-induction EMF, which counteracts the change in current in the circuit. This causes the alternating current in the inductive circuit to lag behind the voltage in the circuit in phase.

Mathematically, this is expressed by the formula X_L = 2πfL, where X_L is the inductive reactance, f is the frequency of the alternating current, L is the inductance of the coil. Inductive reactance is measured in ohms.

Inductive reactance affects electrical circuits containing inductance, and can lead to a change in the amplitude and phase of the current and voltage in the circuit. This can lead to undesirable effects such as the generation of interference and noise in electrical devices.

One way to reduce the effect of inductive reactance in a circuit is to use compensating capacitors. A compensating capacitor is connected in parallel to the inductive coil and creates an electric field that compensates for the magnetic field generated by the coil. Thus, the compensating capacitor makes it possible to reduce the inductive reactance in the circuit and improve its electrical characteristics.

Inductive reactance also plays an important role in electromagnetic devices such as transformers and electric motors. In transformers, the inductance of the coils is used to transfer energy from one coil to another, and in electric motors - to create torque.

In conclusion, inductive reactance is the resistance that appears in electrical circuits containing inductance. Inductive reactance can lead to a change in the amplitude and phase of the current and voltage in the circuit and can be reduced by using compensating capacitors. Coil inductance is also used in various electromagnetic devices such as transformers and electric motors to transfer power and generate torque.
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