What is the relationship between permeability and dielectric constant?

Thread starter amaresh92
Start date Jun 5, 2011
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Dielectric Permeability

In summary, permeability is the measure of a material's ability to allow magnetic flux to pass through it, and it determines the speed of electromagnetic waves through the material. It is typically measured using a permeameter. Dielectric strength, on the other hand, is the maximum electric field a material can withstand before becoming conductive, and it is important for electrical insulation. Temperature affects both permeability and dielectric strength, with permeability decreasing and dielectric strength either increasing or decreasing. These properties can also be altered through various methods for specific applications.

Jun 5, 2011

amaresh92

what is the difference between permeability and dielectric constant?
advanced thanks.

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Jun 6, 2011

Geezer

Take a gander here: https://secure.wikimedia.org/wikipedia/en/wiki/Permittivity" Everything is on that page.

Last edited by a moderator: May 5, 2017

1. What is permeability and how does it relate to electromagnetic waves?

Permeability is a measure of how easily a material allows magnetic flux to pass through it. In the context of electromagnetic waves, permeability determines the speed at which the waves travel through a given material.

2. How is permeability measured?

Permeability is typically measured using a device called a permeameter, which measures the magnetic field strength inside a material when it is placed in a known magnetic field. The ratio of these two values gives the permeability of the material.

3. What is dielectric strength and why is it important?

Dielectric strength is the maximum electric field that a material can withstand before it breaks down and becomes conductive. It is an important property for materials used in electrical insulation, as it ensures the safety and reliability of electrical systems.

4. How does temperature affect the permeability and dielectric strength of materials?

Generally, the permeability of materials decreases with increasing temperature due to thermal motion disrupting the alignment of magnetic dipoles. Dielectric strength, on the other hand, can either increase or decrease with temperature depending on the material and its composition.

5. Can the permeability and dielectric properties of a material be altered?

Yes, the permeability and dielectric properties of a material can be altered through various methods such as changing its composition, applying external magnetic or electric fields, or altering the material's microstructure. These changes can be useful in designing materials for specific applications.