Polarization when associated with electric fields?

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Polarization in electric fields refers to the alignment of positive and negative charges within a dielectric material when subjected to an electric field. This process creates an electric dipole moment in each molecule, resulting in a separation of charges. The polarization vector P is defined as the dipole moment per unit volume, quantifying the extent of polarization within the material. Understanding this concept is crucial for applications in capacitors and other electronic components. Overall, polarization plays a significant role in the behavior of materials in electric fields.
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Can any 1 please help me out with this...i'm not able to understand the term polarization when associated with electric fields??
 
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Acting on a dielectric, an electric field polarizes the molecules by stretching the positive charges and negaive charges in opposite directions.
This gives each molecule an electric dipole moment.
A polarization vector P is introduced that is equal to the dipole moment per unit volume.
 
heythanx a lot..
 
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