What is local electric field at an atom?

In dielectric solids, the atoms or molecules experience not only the external applied electric field but also the electric field produced by the dipoles. The resultant electric field acting on the atoms or molecules of dielectric substance is called the local field or an internal field.

What is the formula for local field?

We define the local field Eloc to be the field felt by one particle (mostly an atom) of the material at its position (x,y,z). The electrical field then is just the (negative) gradient of the potential; E = – ∇V.

How is local field different from Maxwell field?

It is this field which enters into the Maxwell equations, which are used for the macroscopic description of dielectric media. In the present situation the field E is a constant throughout the medium. On the other hand, the local field Eloc is a microscopic field which fluctuates rapidly within the medium.

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What is local field in dielectric is it more than or less than macroscopic field?

The Macroscopic field is not the local field. The local field varies wildly from point-to-point. The macroscopic field is realized by averaging the local field over the volume of the dielectric and adding that to the vector external field.

What is Lorentz local field?

[′lȯr‚ens ¦lō·kəl ′fēld] (electricity) In a theory of electric polarization, the average electric field due to the polarization at a molecular site that is calculated under the assumption that the field due to polarization by molecules inside a small sphere centered at the site may be neglected.

What is meant by local field in a dielectric and how is it calculated for a cubic structure?

When a liquid or solid dielectric placed in an external electric field , it’s​ atoms becomes electric dipole which provides field which is different than applied field.the total field at the atomic sites is called the internal field or local field.it is represented by Ei or EL. E(localfield)=E+p/3

What is meant by dielectric loss?

dielectric loss, loss of energy that goes into heating a dielectric material in a varying electric field. For example, a capacitor incorporated in an alternating-current circuit is alternately charged and discharged each half cycle. … Dielectric losses depend on frequency and the dielectric material.

What is meant by local field in a dielectric and how is it calculated for a cubic structure deduce the Clausius Mosotti relation *?

Answer: Local field: When a liquid or solid dielectric placed in an external electric field , it’s​ atoms becomes electric dipole which provides field which is different than applied field. the total field at the atomic sites is called the internal field or local field.

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What is external and internal electric field?

(a) (E int,0 , B int,0 ) are the fields produced by the internal sources, i.e., the charges and currents constituting the material sample (without the external perturbation). (b) The external fields are produced by the external sources in the absence of the medium.

What is depolarization field in physics?

Depolarization is an electrochemical phenomenon that involves the removal or prevention of polarization in a substance or of polarization arising from the field due to the charges induced on the surface of a dielectric when an external field is applied.

When a dielectric material is subjected to an electric field the microscopic electric field inside the dielectric is?

A dielectric material gets polarized when it placed in an electric field. The field produce due to the polarization of material minimize the effect of external field. Hence, the electric field inside a dielectric decreases when it is placed in an external electric field.

What is microscopic field?

1. microscopic field – the areas that is visible through a microscope. field of view, field – the area that is visible (as through an optical instrument)

When a dielectric material is kept in an external electric field which one of the following phenomenon may be realized?

A dielectric gets polarized when it is placed in an electric field. The field produced due to the polarization minimizes the effect of external field.