Magnetic Permeability

Definition: The ability of the material to conduct magnetic lines of force through it is called the magnetic permeability of that material. In other words, it is the capability of the magnetic material to support the development of the magnetic field. The magnetic line of force is directly proportional to the conductivity of the material.…

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Magnetic Hysteresis

The phenomenon of flux density B lagging behind the magnetizing force H in a magnetic material is known as Magnetic Hysteresis. The word Hysteresis is derived from the Greek word Hysterein means to lag behind. In other words, when the magnetic material is magnetized first in one direction and then in the other direction, completing…

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Eddy Current Loss

When an alternating magnetic field is applied to a magnetic material an emf is induced in the material itself according to Faraday’s Law of Electromagnetic induction. Since the magnetic material is a conducting material, these EMFs circulates currents within the body of the material. These circulating currents are called Eddy Currents. They will occur when…

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Residual Magnetism

Residual magnetism is defined as the amount of magnetization left behind after removing the external magnetic field from the circuit. In another word the value of the flux density (ob as shown in the figure with the red color line) retained by the magnetic material is called Residual Magnetism and the power of retaining this…

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Hysteresis Loss

Definition: The work done by the magnetizing force against the internal friction of the molecules of the magnet, produces heat. This energy which is wasted in the form of heat due to hysteresis is called Hysteresis Loss. When in the magnetic material magnetization force is applied, the molecules of the magnetic material are aligned in…

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Parallel Magnetic Circuit

Definition: A magnetic circuit having two or more than two paths for the magnetic flux is called a parallel magnetic circuit. Its behavior can be compared to the parallel electric circuit.The parallel magnetic circuit contains different dimensional areas and materials having various numbers of paths. The above figure shows parallel magnetic circuit. In this circuit,…

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Series Magnetic Circuit

Definition: The Series Magnetic Circuit is defined as the magnetic circuit having number of parts of different dimensions and materials carrying the same magnetic field. Consider a circular coil or solenoid having different dimensions as shown in the figure below Current I is passed through the solenoid having N number of turns wound on the…

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Mutual Inductance

Definition: Mutual Inductance between the two coils is defined as the property of the coil due to which it opposes the change of current in the other coil, or you can say in the neighboring coil. When the current in the neighboring coil is changing, the flux sets up in the coil and because of…

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Self Inductance

Definition: Self inductance or in the 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.…

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Leakage Flux And Fringing

Leakage flux is defined as the magnetic flux which does not follow the particular 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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