Effect of Dielectric Material on Electric Field in a Parallel Plate Capacitor

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Homework Help Overview

The discussion revolves around the effect of dielectric materials on the electric field in a parallel plate capacitor that remains connected to a battery. Participants are exploring how the introduction of a dielectric influences the electric field, capacitance, and charge in the system.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are attempting to understand the relationship between dielectric materials and electric fields, questioning how the electric field behaves when a dielectric is introduced. There are inquiries about the nature of dielectrics and their behavior in electric fields, including atomic-level considerations.

Discussion Status

The discussion is ongoing, with participants expressing uncertainty about the concepts involved. Some have provided basic definitions of dielectrics, while others are seeking simpler explanations and expressing a lack of familiarity with more complex ideas such as dipoles.

Contextual Notes

Participants have indicated that they have not yet covered certain topics, such as dipoles and their alignment in electric fields, which may limit their ability to engage with the problem fully.

Sheneron
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Homework Statement


A fully charged parallel plat capacitor remains connected to a battery while a dielectric is slid between. Does the electric field increase, decrease, or remain the same?


The Attempt at a Solution



Don't know this one or how to show it. I know that potential difference is constant and the capacitance and charge will increase, but I can't figure out the E. field.
 
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What happens to a dielectric material when it is placed in an external electric field?
 


I am not sure
 


Sheneron said:
I am not sure
Well, what is a dielectric?
 


a nonconducting material.
 


Sheneron said:
a nonconducting material.
Erm... yes, but I meant on the atomic scale. In electromagnetism it is useful to think of dielectrics in a magnetic field as to be composed of dipoles. So, when you have a dipole in an electric field how does it tend to align itself with respect to the electric field?
 


Not quite that far along yet. Is there a more simple solution? We haven't talked about dipoles or magnetic fields.
 

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