Definition: The emf induced in a coil due to the change of flux produced by another neighbouring coil linking to it, is called Mutually Induced emf. Let us take an example to understand the phenomenon of mutually induced emf. Consider a coil AB. Coil B is having N2 number of turns and is placed near another coil …
Definition: Self-induced emf is the e.m.f induced in the coil due to the change of flux produced by linking it with its own turns. This phenomenon of self-induced emf can be further understood by the following example given below: Consider a coil having N number of turns as shown in the above figure. When the …
Definition: The number of magnetic lines of forces set up in a magnetic circuit is called Magnetic Flux. It is analogous to electric current, I in an electric circuit. Its SI unit is Weber (Wb) and its CGS unit is Maxwell. It is denoted by φm. The magnetic flux measures through flux meter. The fluxmeter …
If Electric current is passed through a simple magnet wound with a coil of insulated wire and the magnetic field is produced the magnet formed by this process is called Electromagnet. The core of the magnet which is wound with the wire is made of ferromagnetic or ferromagnetic materials such as iron. The magnetic field …
The name Faraday’s Law of Electromagnetic Induction is given in the name of a famous scientist Michael Faraday in the 1930’s. It gives the relationship between electric voltage and changing magnetic field. Faraday’s Law of Electromagnetic Induction states that “ the magnitude of voltage is directly proportional to the rate of change of flux.” that …
An Electromotive Force or EMF is said to be induced when the flux linking with a conductor or coil changes. This change in flux can be obtained in two different ways; that is by statically or by dynamically induced emf. They are explained below Contents: Statically Induced Electromotive Force Dynamically Induced Electromotive Force 1. STATICALLY …
Definition: It is the measure of the ease with which flux can be set up in a material. In other words, it measures the magnitude of the flux for the number of turns in an electric circuit. The permeance is analogous to the conductance in an electrical circuit. It is given as the reciprocal of …
Definition: The obstruction offered by a magnetic circuit to the magnetic flux is known as reluctance. As in electric circuit, there is resistance similarly in the magnetic circuit, there is a reluctance, but resistance in an electrical circuit dissipates the electric energy and the reluctance in magnetic circuit stores the magnetic energy. Also in an …
Definition: The current flowing in an electric circuit is due to the existence of electromotive force similarly magnetomotive force (MMF) is required to drive the magnetic flux in the magnetic circuit. The magnetic pressure, which sets up the magnetic flux in a magnetic circuit is called Magnetomotive Force. The SI unit of MMF is Ampere-turn …
The fraction of magnetic flux produced by the current in one coil that links with the other coil is called the coefficient of coupling between the two coils. It is denoted by (k). Two coils are taken coil A and coil B, when current flows through one coil it produces flux; the whole flux may …
