The polarized dielectric is equivalent toa)non-zero volume charge densityb)one charged surface with induced surface charge densityc)two charged surfaces with induced surface charge densitiesd)zero surface charge densityCorrect answer is option 'C'. Can you explain this answer?

Question

Accepted Answer

A polarized dielectric is equivalent to two charged surfaces with induced charges (polarization charges).

Answer

Generally the polarized dielectric is equivalent to the two charged sur face with induced surface charge density

Answer

The polarization is defined by the dipole moment per unit volume, so the total dipole moment in the volume is: This is equivalent to two charges, each equal to , separated by distance .&__

Answer

Two charged surfaces with induced surface charge density

Answer

Polarized Dielectric:
A polarized dielectric is a material that has undergone polarization, which is the process of separating positive and negative charges within the material. This occurs when the dielectric is placed in an electric field.

Charge Distribution in a Polarized Dielectric:
When a dielectric is polarized, the positive charges are displaced towards the negative pole of the electric field, while the negative charges are displaced towards the positive pole. This results in the formation of two charged surfaces within the dielectric.

Equivalent Charge Distribution:
The question asks for the equivalent charge distribution for a polarized dielectric. The correct answer is option 'C', which states that a polarized dielectric is equivalent to two charged surfaces with induced surface charge densities.

Explanation:
To understand why option 'C' is correct, let's consider the charge distribution within a polarized dielectric.

- When an electric field is applied to a dielectric, the positive charges are attracted towards the negative pole, while the negative charges are attracted towards the positive pole.
- As a result, positive charges accumulate on one surface of the dielectric, while negative charges accumulate on the opposite surface.
- These accumulated charges on the surfaces are known as induced surface charge densities, as they are induced by the applied electric field.
- The positive surface charge density is equal in magnitude to the negative surface charge density, but they have opposite signs.
- The presence of these induced surface charges creates an electric field within the dielectric that opposes the applied electric field.
- This opposing electric field weakens the overall electric field within the dielectric, resulting in a reduction of the net electric field.

Therefore, a polarized dielectric can be considered as two charged surfaces with induced surface charge densities. These induced charges are responsible for the polarization effect and the reduction of the net electric field within the dielectric.

Conclusion:
In summary, a polarized dielectric can be represented as two charged surfaces with induced surface charge densities. This charge distribution is a result of the separation of positive and negative charges within the dielectric when it is placed in an electric field.

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