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Electric Fields and Dielectrics
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What is the primary reason that insulators become polarized when placed in an external electric field?

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Learning Path

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Choose AnswerChoose the Best Answer

A

The electrons in the insulator are free to move and align with the field.

B

The external field causes a realignment of positive and negative charges within the atoms.

C

Insulators have a higher density of mobile charge carriers than conductors.

D

The external electric field creates a vacuum that allows charges to flow.

Understanding the Answer

Let's break down why this is correct

When an electric field touches an insulator, it nudges the tiny positive and negative parts of each atom so they line up with the field. Other options are incorrect because The idea that electrons move freely inside an insulator is a misunderstanding of how insulators work; Insulators are known for having very few mobile charge carriers, not more.

Key Concepts

Electric field induction
Polarization of insulators
Dipole formation
Topic

Electric Fields and Dielectrics

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medium level question

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understand

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Definition
Definition

Electric field induction occurs in insulators, creating dipoles due to the rearrangement of electrons when subjected to an external electric field. This phenomenon leads to the polarization of insulators, forming layers of induced charges. Understanding electric field induction is essential in studying dielectrics and their impact on electric fields.

Topic Definition

Electric field induction occurs in insulators, creating dipoles due to the rearrangement of electrons when subjected to an external electric field. This phenomenon leads to the polarization of insulators, forming layers of induced charges. Understanding electric field induction is essential in studying dielectrics and their impact on electric fields.

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