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What is dielectric constant and give a perfect example for this qns

What is dielectric constant and give a perfect example for this qns

Grade:12

3 Answers

Arun
25750 Points
5 years ago
Dear stydent
 
Dielectric, insulating material or a very poor conductor of electric current. When dielectrics are placed in an electric field, practically no current flows in them because, unlike metals, they have no loosely bound, or free, electrons that may drift through the material. Instead, electric polarization occurs.Dielectric constant, property of an electrical insulating material (a dielectric) equal to the ratio of the capacitance of a capacitor filled with the given material to the capacitance of an identical capacitor in a vacuum without the dielectricmaterial. ... The dielectric constant is a number without dimensions. The term insulator is generally used to indicate electrical obstruction while the term dielectric is used to indicate the energy storing capacity of the material (by means of polarization). A common example of a dielectric is the electrically insulating material between the metallic plates of a capacitor.
Abhinav Gupta
77 Points
5 years ago
Dielectrics are materials that don’t allow current to flow. They are more often called insulators because they are the exact opposite of conductors. But usually when people call insulators “dielectrics,” it’s because they want to draw attention to a special property shared by all insulators: polarizability.
When a battery is connected to a conductor, the potential difference of the two poles of the battery pushes on all the charges in the conductor, which in turn causes them to drift slowly through the material—creating a currentthrough the conductor. This happens because the outer electrons in a conductor are not attached to particular nuclei; they can wander freely throughout the entire material. In a dielectric, the charges are valence electrons that are stuck inside atoms of a crystal or polymer, and so current doesn’t flow at all. The electric field, however, still exerts a force on the charges. While the individual electrons remain tied to their parent atoms, they prefer to stay on the side of the atom that’s closer to the positive terminal. You can imagine the electrons wanting to jump off their parent atoms, but instead remaining leashed to them by the electrostatic forces that bind valence electrons to the nucleus
NAGAYYA G
20 Points
5 years ago
Dielectric is a insulator , example rubber/plastic .... This material will use in construction of capacitors to increase the capacitance of a capacitor. Dielectric constant, property of an electrical insulating material (a dielectric) equal to the ratio of the capacitance of a capacitor filled with the given material to the capacitance of an identical capacitor in a vacuum

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