# Reactance

Reactance is a measure of a circuit's opposition to an alternating current (AC) of a particular frequency. It is caused by the inductance or capacitance of the circuit, and is usually represented as a complex number.

Inductive reactance is caused by inductors, which oppose changes in current. The inductive reactance of a circuit is proportional to the frequency of the AC signal.

Capacitive reactance is caused by capacitors, which oppose changes in voltage. The capacitive reactance of a circuit is inversely proportional to the frequency of the AC signal.

Reactance is important in electronics because it determines the overall impedance of a circuit, which affects the amount of current that will flow through the circuit.

### What is reactance and resistance?

reactance is the measure of a circuit's opposition to alternating current (AC), whereas resistance is the measure of a circuit's opposition to direct current (DC). In other words, reactance allows AC to flow through a circuit more easily than DC, whereas resistance makes it more difficult for AC to flow. The opposition that a circuit offers to current flow is known as impedance. What is reactance example? Reactance is a measure of a circuit's opposition to an alternating current (AC), caused by inductance or capacitance. The reactance of an inductor increases with frequency, while the reactance of a capacitor decreases with frequency.

What is reactance and its unit? In electrical engineering, reactance is the opposition that a circuit element offers to the passage of an alternating current (AC) of electromagnetic radiation. The reactance of an inductor is directly proportional to the frequency of the current, and the reactance of a capacitor is inversely proportional to the frequency. The unit of reactance is the ohm. What is another word for reactance? Thereactanceof an inductor is the opposition to current flow that is caused by the inductor's magnetic field. The reactance of a capacitor is the opposition to current flow that is caused by the capacitor's electric field. What causes reactance? In electronic circuits, reactance is the opposition that a circuit element offers to the passage of a current when the voltage across the element is changing. The reactance of an inductor is proportional to the frequency of the voltage applied to it, and the reactance of a capacitor is inversely proportional to the frequency. When the current through a circuit element is constant, the element has zero reactance.