Electrical Terms

Self Inductance

Definition: Self-inductance or in other words inductance of the coil is defined as the property of the coil due to which it opposes the change of current flowing through it. Inductance is attained by a coil due to the self-induced emf produced in the coil itself by changing the current flowing through it. If the …

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Leakage Flux And Fringing

Leakage flux is defined as the magnetic flux which does not follow the particularly intended path in a magnetic circuit. Taking an example of solenoid you can explain the leakage flux and the fringing both. When a current is passed through a solenoid, magnetic flux is produced by it. Most of the flux is set …

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Mutually Induced EMF

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 …

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Self Induced EMF

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 …

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Magnetic Flux

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 …

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Induced EMF

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 …

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Permeance

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 …

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Magnetic Reluctance

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 …

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