Magnetic Circuits, Air Gaps (conceptual)

In summary, when dealing with magnetic circuits, if the question states to ignore fringing, the flux density of the gap will equal the flux density of the core. Additionally, if there are multiple materials present, the flux density throughout the entire circuit will remain the same, with only the permeability of each material and the magnetizing force varying. This can be seen in example 9.7.1 in the link provided. Furthermore, a similar example can be found on page 11 of the second link. These examples were found by searching for "magnetic circuits air gaps" on Google. Unfortunately, expert advice could not be provided.
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sandy.bridge
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Homework Statement


When dealing with magnetic circuits, if the question explicitly states to ignore fringing, then the flux density of the gap will equal the flux density of the core, correct? In fact, if there are ever more materials, the flux density throughout the entire circuit (series) will have the same flux, and flux density. The only thing that will vary is the permeability of each material as well as the magnetizing force, correct?
 
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FAQ: Magnetic Circuits, Air Gaps (conceptual)

What is a magnetic circuit?

A magnetic circuit is a closed path or loop through which a magnetic flux travels. The circuit includes a magnetic material such as iron or steel, which helps to concentrate the magnetic flux and create a stronger magnetic field.

How does an air gap affect a magnetic circuit?

An air gap in a magnetic circuit can weaken the magnetic field by interrupting the flow of magnetic flux. This is because air has a lower permeability than magnetic materials, so it does not conduct the magnetic field as well.

What factors affect the strength of a magnetic circuit?

The strength of a magnetic circuit depends on the permeability of the magnetic material, the cross-sectional area of the circuit, and the length of the circuit. The presence of air gaps and the amount of current flowing through the circuit can also affect its strength.

How can air gaps be used to control the strength of a magnetic circuit?

Air gaps can be intentionally introduced into a magnetic circuit to weaken the magnetic field. They can also be adjusted or varied to fine-tune the strength of the magnetic field. This is often used in electromagnets to control the amount of force or torque produced.

Are there any practical applications of magnetic circuits with air gaps?

Yes, magnetic circuits with air gaps are commonly used in various electrical devices such as motors, generators, transformers, and relays. They are also used in magnetic levitation systems, where the strength of the magnetic field can be controlled to lift and suspend objects without direct contact.

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