📚 Learning Guide
Electric Fields and Dielectrics
hard

Arrange the following steps in the correct order to describe the process of electric field induction in dielectrics: A. The external electric field is applied. B. The bound electrons in the dielectric experience a force. C. Induced dipoles are formed within the dielectric material. D. The dielectric material becomes polarized.

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Choose the Best Answer

A

A → B → C → D

B

A → C → D → B

C

B → A → D → C

D

C → B → A → D

Understanding the Answer

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Answer

When a dielectric is placed in an external electric field, the field is first applied to the material. This field exerts forces on the bound electrons and positive ions inside the dielectric. As a result, the electrons shift slightly relative to the ions, creating tiny electric dipoles. These dipoles align with the external field, so the material as a whole becomes polarized. For example, placing a plastic sheet between capacitor plates makes the sheet act like a set of tiny aligned magnets, which reduces the overall electric field inside the capacitor.

Detailed Explanation

When a voltage is applied, the field pushes the bound electrons, creating a pair of opposite charges inside the material. Other options are incorrect because It assumes dipoles appear before the electrons feel a push; It suggests electrons move before the field is there.

Key Concepts

Electric Field Induction
Polarization of Dielectrics
Dipole Formation
Topic

Electric Fields and Dielectrics

Difficulty

hard level question

Cognitive Level

understand

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