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The electric field inside a dielectric decreases, when it is placed in an external electric field. This happens due to ________
- a)Electrostatic shielding.
- b)Polarization.
- c)Electrostatic repulsion between atoms.
- d)Electrostatic attraction between atoms.
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
The electric field inside a dielectric decreases, when it is placed in...
Explanation:
When a dielectric material is placed in an external electric field, the electric field inside the dielectric decreases. This phenomenon is known as polarization.
Polarization:
Polarization is the process by which positive and negative charges in a dielectric material are separated and aligned in opposite directions under the influence of an external electric field. This leads to the creation of an induced dipole moment in the dielectric material.
Effect of Polarization:
The polarization of the dielectric material results in the generation of an internal electric field that opposes the external electric field. This internal electric field is created by the alignment of the induced dipoles in the dielectric material.
Net Electric Field:
The net electric field inside the dielectric is the vector sum of the external electric field and the internal electric field due to polarization. As the induced dipoles align in the opposite direction to the external electric field, the internal electric field reduces the magnitude of the external electric field.
Electrostatic Shielding:
Electrostatic shielding refers to the phenomenon where charges are redistributed in a conductor to nullify the electric field inside it. However, in the case of a dielectric, the charges are not redistributed but rather polarized, leading to a decrease in the electric field inside the dielectric.
Electrostatic Repulsion or Attraction between Atoms:
While there may be some electrostatic repulsion or attraction between atoms in the dielectric material, it does not directly cause the decrease in the electric field inside the dielectric. The decrease is primarily due to the polarization effect.
Therefore, the correct answer is (B) Polarization.
When a dielectric material is placed in an external electric field, the electric field inside the dielectric decreases. This phenomenon is known as polarization.
Polarization:
Polarization is the process by which positive and negative charges in a dielectric material are separated and aligned in opposite directions under the influence of an external electric field. This leads to the creation of an induced dipole moment in the dielectric material.
Effect of Polarization:
The polarization of the dielectric material results in the generation of an internal electric field that opposes the external electric field. This internal electric field is created by the alignment of the induced dipoles in the dielectric material.
Net Electric Field:
The net electric field inside the dielectric is the vector sum of the external electric field and the internal electric field due to polarization. As the induced dipoles align in the opposite direction to the external electric field, the internal electric field reduces the magnitude of the external electric field.
Electrostatic Shielding:
Electrostatic shielding refers to the phenomenon where charges are redistributed in a conductor to nullify the electric field inside it. However, in the case of a dielectric, the charges are not redistributed but rather polarized, leading to a decrease in the electric field inside the dielectric.
Electrostatic Repulsion or Attraction between Atoms:
While there may be some electrostatic repulsion or attraction between atoms in the dielectric material, it does not directly cause the decrease in the electric field inside the dielectric. The decrease is primarily due to the polarization effect.
Therefore, the correct answer is (B) Polarization.
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Community Answer
The electric field inside a dielectric decreases, when it is placed in...
The external electric field polarizes the dielectric and an electric field is produced.
The net electric field inside the dielectric decreases due to polarization.
The net electric field inside the dielectric decreases due to polarization.
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