The permeability of a dielectric material in air medium will bea)Absolute permeabilityb)Relative permeabilityc)Product of absolute and relative permeabilityd)UnityCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

As Permittivity =product of absolute petmittivity and relative permittivity
but In air medium relative permittivity equals to ONE..
so,Permittivity of Air =Absolute permittivity

Answer

Answer: a
Explanation: The total permeability is the product of the absolute and the relative permeability. In air medium, the relative permeability will be unity. Thus the total permeability is equal to the absolute permeability given by 4π x 10^-7 units.

Answer

Permeability of a Dielectric Material in Air Medium

Introduction:
Permeability is a physical property that describes the ability of a material to allow the flow of magnetic lines of force. It is an important parameter in electromagnetism and is used to characterize the behavior of materials in the presence of magnetic fields.

Dielectric Material:
A dielectric material is an insulating material that does not conduct electric current easily. It is commonly used in capacitors to store electrical energy.

Permeability in Air Medium:
When a dielectric material is placed in an air medium, its permeability can be described by its absolute permeability.

Absolute Permeability:
Absolute permeability (μ) is a measure of how easily a material can be magnetized. It is defined as the ratio of the magnetic field strength (H) to the magnetic flux density (B) in a medium. Mathematically, it is expressed as:

μ = B / H

The absolute permeability of a material is a constant value that depends on the material's intrinsic magnetic properties. In the case of a dielectric material in an air medium, the absolute permeability is a property of the dielectric material itself and is independent of the medium.

Relative Permeability:
Relative permeability (μr) is a dimensionless quantity that compares the permeability of a material to that of a vacuum. It is defined as the ratio of the absolute permeability of a material (μ) to the permeability of free space (μ0). Mathematically, it is expressed as:

μr = μ / μ0

The relative permeability of a material indicates how much more or less easily it can be magnetized compared to a vacuum. It is a characteristic property of the material and can vary depending on the type of material.

Conclusion:
In the given question, the permeability of a dielectric material in an air medium is referred to as the absolute permeability. This is because the absolute permeability is a property of the dielectric material itself and is independent of the medium in which it is placed. The relative permeability, on the other hand, compares the permeability of a material to that of a vacuum and is not applicable in this context. Therefore, the correct answer is option 'A' - Absolute permeability.

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