What causes an increase in inductive reactance?

An alternating current has a time-averaged rate-of-change that is proportional to frequency, this causes the increase in inductive reactance with frequency.

Does a choke coil have high inductance?

A choke coil has high inductance and low resistance , due to large inductance L of the coil, the current in the circuit is decreased appreaciably. Due to small resistance of the coil , the power loss in the choke , coil is less.

What has the greatest effect on the inductive reactance of a coil?

Coil Length All other factors being equal, the longer the coil’s length, the less inductance; the shorter the coil’s length, the greater the inductance.

What is the reactance XL of the inductor?

In inductors, voltage leads current by 90 degrees. The formula for calculating the inductive reactance of a coil is: inductive reactance, or XL, is the product of 2 times p (pi), or 6.28, the frequency of the ac current, in hertz, and the inductance of the coil, in henries. XL =2p x f x L.

What two factors affect inductive reactance?

In the given equation, inductive reactance value is proportional to the inductance and frequency. The inductive reactance increases with either increase in inductance or increase in frequency. Hence the inductive reactance varies linearly with inductance and frequency.

How do you increase inductive reactance?

The inductive reactance of a component is directly proportional to the inductance of the component and the applied frequency to the circuit. By increasing either the inductance or applied frequency, the inductive reactance will likewise increase and present more opposition to current in the circuit.

Why choke coil has high inductance and low resistance?

A choke will has got high inductance and low resistance. Since an inductor is a nonresistive device, it does not consume any power in the form of heat like a resistance. That’s why we use a low resistance and a high inductance in a choke to save power.

What is the ideal resistance value of the choke coil?

zero resistance
Statement-II: Ideal choke coil has zero resistance.

What affect inductance of a coil?

Inductance is affected by how much wire is in the coil and how close the turns are to each other. If you add more wire, by either making the diameter of the coil larger or adding more turns of wire, the inductance increases. Inductance increases with a larger diameter of coil.

How does resistance of wire and reactance of coil get affected when the frequency of applied AC is doubled?

The resistance does not depend on frequency. So, R will remain same.

What affects the inductance of a coil?

What is the purpose of using a choke coil?

Choke coil is combination of resistance and inductor. Which is used to pass dc current through Circuit properly and to attenuate AC current flow in circuit. For this purpose a large inductance inductor and a low resistance is used so that this can resist AC current more. Answer verified by Toppr

What is the reactance of an inductor at high frequency?

The slope shows that the “Inductive Reactance” of an inductor increases as the supply frequency across it increases. Then we can see that at DC an inductor has zero reactance (short-circuit), at high frequencies an inductor has infinite reactance (open-circuit).

What is inductive reactance in circuit?

Definition: Inductive reactance is the opposition offered by the inductor in an AC circuit to the flow of ac current. It is represented by (X L) and measured in ohms (Ω). Inductive reactance is mostly low for lower frequencies and high for higher frequencies. It is, however, negligible for steady DC current.

What is the opposition to current flow through a coil?

Now in an AC circuit, the opposition to current flow through the coils windings not only depends upon the inductance of the coil but also the frequency of the AC waveform. The opposition to current flowing through a coil in an AC circuit is determined by the AC resistance, more commonly known as Impedance (Z), of the circuit.