Inductor

What is an inductor?

An inductor is a passive electronic component that stores energy in a magnetic field when electric current flows through it. It typically consists of a conductor, such as a wire, wound into a coil.

How does an inductor work?

When current flows through the coil of an inductor, a magnetic field is generated around it. This field stores energy. If the current changes, the magnetic field changes, inducing a voltage opposite to the change in current, based on Lenz’s Law.

What is the Value of Power Factor for a Pure Inductor?

The power factor for a pure inductor value is always zero.

What is Self-Induction?

Self-induction is a type of induction in which a coil tends to resist changes in current in itself.

What is Mutual Induction?

When changing current in one coil induces an emf in the other coil, the phenomenon is called mutual induction. The strength of the induced emf depends on the mutual inductance of the pair of coils.

When is EMF Induced in a Circuit?

An EMF is induced in a circuit when there is a change in the magnetic flux passing through it.

Why does an inductor block AC but allow DC?

An inductor blocks AC because it resists changes in current flow. For DC, once the initial electromagnetic field is built up, there is no change in current, so the inductor behaves almost like a short circuit, allowing DC to pass through with minimal resistance.

What factors affect the inductance of a coil?

Several factors influence the inductance of a coil:

• The number of turns in the coil.
• The material of the core (ferromagnetic materials increase inductance).
• The shape and size of the coil.
• The presence of a core material within the coil.

What are the types of inductors?

There are various types of inductors, each suited for different applications:

• Air-core inductors, which do not use a magnetic core.
• Iron-core inductors, which have a ferromagnetic core to enhance the magnetic field.
• Toroidal inductors, which are wound on a doughnut-shaped core.
• Ferrite beads, used in electronic circuits to suppress high-frequency noise.

What is the function of an inductor in an AC circuit?

In AC circuits, inductors are used to block higher frequencies while allowing lower frequencies to pass. They are commonly used in filters, like those in audio and radio frequency applications.

What is the Use of Inductor?

Inductors are mainly used in electrical power and electronic devices to Chok, block, or filter high frequency noise in electrical circuits.

What is Principle of an Inductor?

The concept of an inductor is its ability to hold energy in the form of magnetic field when the electric current flows through it.

What is the SI Unit of Inductors?

SI unit of inductance is Henry which is represented as ‘H’.

Inductors are electrical components that create a magnetic field when an electric current is passed through them. Inductors are most commonly coil-like structures in electronic circuits that are mostly used to reduce or control electrical spikes in a circuit. There are various types of inductors including, Iron Core and Air Core Inductors. Its main functions include controlling signals and storing energy.

In this article, we will study Inductors, Types of Inductors, Functions, and Construction of Inductors, Energy stored in Inductors along with the Inductors in parallel and series, and a brief difference between inductors and capacitors.