Difference Wiki

Permittivity vs. Permeability: What's the Difference?

Edited by Huma Saeed || By Sumera Saeed || Updated on October 9, 2023
Permittivity measures a material’s ability to store electrical charge, often denoted by the Greek letter epsilon. Permeability gauges a material’s ability to support magnetic field development, symbolized by the Greek letter mu.

Key Differences

Permittivity is inherently associated with electric fields and the formation or storage of electrical charge within a material. In contrast, permeability is intertwined with magnetic fields, concerning itself with the propagation of these fields through a specific material.
Sumera Saeed
Oct 09, 2023
The unit of permittivity, farads per meter (F/m), emphasizes its role in capacitive effects in electrical circuits. On the flip side, permeability is measured in henries per meter (H/m), elucidating its connection to inductance and magnetic circuits.
Sumera Saeed
Oct 09, 2023
When discussing permittivity, we often encounter the term "dielectric constant," especially when dealing with capacitors in electronics. Whereas, discussions on permeability may pivot towards "relative permeability" when delving into materials’ magnetic properties.
Sumera Saeed
Oct 09, 2023
Permittivity is crucial in the study of electrostatics, affecting the force between electric charges and capacitive energy storage in electrical fields. Conversely, permeability is paramount in magnetostatics, influencing the behavior and propagation of magnetic fields.
Sumera Saeed
Oct 09, 2023
In materials, permittivity usually comes into play when evaluating how well a material can permit an electric field, affecting phenomena like polarization. In a similar manner, permeability is significant when assessing how well a material supports the formation of magnetic fields, affecting phenomena such as ferromagnetism.
Aimie Carlson
Oct 09, 2023
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Comparison Chart

Syllables

5
6
Sumera Saeed
Oct 09, 2023

Part of Speech

Noun
Noun
Sumera Saeed
Oct 09, 2023

Rhyming Words

Competitivity, conductivity
Impeachability, teachability
Sumera Saeed
Oct 09, 2023

Grammatical Variations

Permittivities (plural form)
Permeabilities (plural form)
Janet White
Oct 09, 2023

Permittivity and Permeability Definitions

Permittivity

A measure indicating how an electric field affects and is affected by a dielectric medium.
Air, having low permittivity, is a common insulator in various applications.
Janet White
Oct 09, 2023
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Permeability

A coefficient indicating the induced magnetization of a material in response to an applied magnetic field.
Permeability plays a vital role in determining the magnetic response of materials in inductive components.
Sumera Saeed
Oct 09, 2023

Permittivity

A property determining the electric displacement in a material in response to an applied electric field.
The permittivity of vacuum serves as a reference point in electrostatic equations.
Sumera Saeed
Oct 09, 2023

Permeability

The degree to which a substance allows the passage of magnetic flux.
The high permeability of certain alloys is utilized in developing efficient electromagnetic shielding.
Huma Saeed
Oct 09, 2023

Permittivity

A parameter affecting the speed of light and electromagnetic wave propagation through a medium.
The permittivity of the medium dictates the phase velocity of propagating electromagnetic waves.
Sumera Saeed
Oct 09, 2023

Permeability

A measure indicating the ability of a material to support the formation of a magnetic field within itself.
Ferromagnetic materials exhibit high permeability under specific conditions.
Sumera Saeed
Oct 09, 2023

Permittivity

The capability of a material to store electric charge.
The permittivity of the dielectric material influences the overall capacity of the capacitor.
Huma Saeed
Oct 09, 2023

Permeability

The quality of a material that allows magnetic lines of force to pass through it.
The permeability of iron is high, making it a choice material for magnetic core construction.
Aimie Carlson
Oct 09, 2023

Permittivity

The quotient of the electric field and the electric flux density in a given material.
Researchers often manipulate permittivity to develop better insulating materials.
Sara Rehman
Oct 09, 2023

Permeability

A term depicting how easily a magnetic field can penetrate and establish itself within a material.
The permeability of a material impacts its efficacy in various electromagnetic applications.
Janet White
Oct 09, 2023

Permittivity

A measure of the ability of a material to interact with an electric field and become polarized by the field, weakening the field within the material. The permittivity of a material is the product of the dielectric constant of the material and the permittivity of a perfect vacuum, which is defined to be about 8.854 × 10-12 farad per meter.
Sumera Saeed
Feb 11, 2016

Permeability

The property or condition of being permeable.
Sumera Saeed
Feb 11, 2016

Permittivity

(physics) A property of a dielectric medium that determines the forces that electric charges placed in the medium exert on each other.
Sumera Saeed
Feb 11, 2016

Permeability

The rate of flow of a liquid or gas through a porous material.
Sumera Saeed
Feb 11, 2016

Permeability

The property of being permeable.
Sumera Saeed
Feb 11, 2016

FAQs

Is permittivity crucial in capacitor design?

Yes, the permittivity of the dielectric material influences the capacitance and performance of a capacitor.
Aimie Carlson
Oct 09, 2023

Does permittivity involve electric fields?

Yes, permittivity relates to the ability of a material to store electric charge in an electric field.
Sumera Saeed
Oct 09, 2023

Can the permittivity of a material be altered?

Yes, certain conditions, like temperature changes or impurity introduction, can alter permittivity.
Janet White
Oct 09, 2023

How does the concept of permittivity relate to Coulomb’s Law?

Permittivity appears in Coulomb's Law as a scaling factor in the denominator, mediating the electric force between two charges based on the medium in which they interact.
Sumera Saeed
Oct 09, 2023

Are there materials that can be described as having negative permeability?

Yes, certain engineered metamaterials can exhibit negative permeability, influencing electromagnetic waves in unusual ways, such as achieving negative refraction.
Sumera Saeed
Oct 09, 2023

Does higher permittivity imply better insulation capabilities?

Yes, materials with higher permittivity generally provide better electrical insulation.
Sumera Saeed
Oct 09, 2023

How does permittivity influence the speed of light in a medium?

The permittivity of a medium affects the phase velocity of light and electromagnetic waves through it.
Harlon Moss
Oct 09, 2023

Is permittivity dependent on the frequency of an applied electric field?

Yes, permittivity can depend on frequency, especially in materials that exhibit dielectric dispersion.
Aimie Carlson
Oct 09, 2023

What is the unit of measurement for permeability?

Permeability is measured in henries per meter (H/m).
Huma Saeed
Oct 09, 2023

Can permeability values change with temperature?

Yes, permeability can be temperature-dependent, particularly in ferromagnetic materials.
Sumera Saeed
Oct 09, 2023

Is permeability relevant in the context of electromagnets?

Yes, permeability is vital in determining the magnetic field strength and efficiency of electromagnets.
Sumera Saeed
Oct 09, 2023

In what units is permittivity expressed?

Permittivity is expressed in farads per meter (F/m) in the International System of Units (SI).
Sumera Saeed
Oct 09, 2023

Does permittivity play a role in the transmission of electromagnetic waves through a medium?

Yes, permittivity affects the propagation speed and attenuation of electromagnetic waves as they travel through a medium.
Sara Rehman
Oct 09, 2023

Does permeability relate to inductance in electrical circuits?

Yes, permeability influences the inductance in electrical circuits, especially in inductors with magnetic cores.
Sara Rehman
Oct 09, 2023

What is “relative permeability” in the context of materials science?

Relative permeability refers to the ratio of a material’s permeability to the permeability of free space, quantifying how effectively it can support a magnetic field.
Janet White
Oct 09, 2023

How does the permittivity of a material influence its electric susceptibility?

The permittivity of a material and its electric susceptibility are directly related, with susceptibility representing how much polarization occurs in response to an applied electric field.
Harlon Moss
Oct 09, 2023

What role does permeability play in the operation of transformers?

Permeability is crucial in transformer cores, influencing the magnetic flux linkage between the primary and secondary windings and thus the efficiency and functionality of the transformer.
Janet White
Oct 09, 2023

In what kinds of materials is magnetic permeability typically highest?

Magnetic permeability is typically highest in ferromagnetic materials, such as iron, cobalt, and nickel.
Sara Rehman
Oct 09, 2023

How does permeability impact magnetic fields?

Permeability indicates how well a material allows the development and propagation of magnetic fields.
Harlon Moss
Oct 09, 2023

Can the permeability of materials be enhanced or modified for technological applications?

Absolutely, material permeability can be enhanced using various treatments, alloying, or manufacturing techniques.
Harlon Moss
Oct 09, 2023
About Author
Written by
Sumera Saeed
Sumera is an experienced content writer and editor with a niche in comparative analysis. At Diffeence Wiki, she crafts clear and unbiased comparisons to guide readers in making informed decisions. With a dedication to thorough research and quality, Sumera's work stands out in the digital realm. Off the clock, she enjoys reading and exploring diverse cultures.
Edited by
Huma Saeed
Huma is a renowned researcher acclaimed for her innovative work in Difference Wiki. Her dedication has led to key breakthroughs, establishing her prominence in academia. Her contributions continually inspire and guide her field.

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