Sample Questions on Permittivity and Permeability
Question 1: Establish a relation between electrostatic force between two charge particle in free space to that of electrostatic force between two charge particles in a medium with relative permittivity given to be εᵣ.
Answer:
Fmedium = q1 × q2 / 4 πε × r2
⇒ Fmedium = q1 × q2 / 4 πεrε₀ × r2 [As εr = ε/ε₀]
⇒ Fmedium = Fair/εr
⇒ εr = Fair/Fmedium
Question 2: What is the relationship between relative permittivity and relative permeability?
Answer:
Both relative permittivity (εr) and relative permeability (μr) are dimensionless constants that describe how a material responds to electric and magnetic fields with respect to their behaviour in free space.
Question 3: How will the electrostatic force between two charge particle changes when placed in a material of relative permittivity of 2.0?
Answer:
Since the relative permittivity of the medium is 2.0 the electrostatic force between two charge particle changes will reduce to half in medium as compared to that in free space.
Permittivity and Permeability
Permittivity and Permeability are two fundamental properties of materials that play a crucial role in the behavior of electromagnetic waves and related fields. Permittivity, represented by the symbol ε (epsilon), describes a material’s ability to permit the electric field to pass through it. Permittivity is a measure of how easily electric charges can be separated within the material in response to an applied electric field. On the other hand, Permeability, denoted as μ (mu), characterizes a material’s ability to allow magnetic fields to pass through it. Permeability represents how readily magnetic flux can propagate within the material when subjected to a magnetic field.
Together, Permittivity and Permeability determine the speed at which electromagnetic waves, such as light and radio waves, travel through a given medium. This article provides a brief description of both Permittivity and Permeability, other than that we will also discuss the key differences between Permittivity and Permeability.
Table of Content
- What is Permittivity?
- Types of Permittivity
- What is Permeability?
- Types of Permeability
- Difference between Permittivity and Permeability