what is meant by permittivity ?Are there any types in permittivity?If yes,what are they?
Answers
Answer:
permittivity is nothing but the ability of a substance to store electrical energy in an electrical field.
Explanation:
brief explanation below.
to understand how electric permittivity works that start by looking at a capacitor ABC capacitor has to charge page that are separated by some substance one of the plates gather positive charge on it and the other gatherers negative charge this creates an electric charge through the substance between them the trick to electric permittivity is what happens to the substance between the capacitor plates when it is placed in an electric field that substance is made for made out of atoms which bind together to form molecules when these atoms form into molecules they often form the dipole moments this means that positive charge is at one end of the molecule and negative charge at the other.
these molecules normally align randomly with each other in a substance but when an external electric field is introduced their line themselves in such way that the electric field there dipole moment produces the external electric field in other words the electric field created by the dipole moments act in the opposite direction of the external electric field this process can be seen where the red vector represents the electric field lines.
according to your question there are some types of permittivity they are mentioned as below.
1) vacuum permittivity
the vacuum permittivity also called permittivity of free space of the electric constant is the ratio in free space it also appears in the coulomb force constant.
2) relative permittivity
the linear permittivity of a h********** material is usually given relative to that of free space as a relative permittivity in an any so trophic material the relative permittivity may be a tensor causing brief engines the actual permittivity is then calculated by multiplying the relative permittivity by 30.
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