Electric Field between two positivly chared surfaces

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Homework Help Overview

The problem involves calculating the electric field components generated by two large, parallel, nonconducting sheets with positive charge. The specific focus is on determining the y component of the electric field in three distinct regions: above the sheets, between them, and below them.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants discuss the method for finding the y component of the electric field, with one questioning the need for trigonometry. Another participant suggests that the electric fields from each plate should be considered in terms of their direction and whether they add or subtract in different regions.

Discussion Status

The discussion is ongoing, with participants exploring different interpretations of the electric field behavior in relation to the charged sheets. Some guidance has been offered regarding the direction of the electric fields, but there is no explicit consensus on the application of rules from other scenarios, such as cylindrical charge distributions.

Contextual Notes

Participants are navigating the implications of the problem setup, particularly regarding the assumption that the electric field in the center might be zero, which is not universally applicable. The specific surface charge density is provided, but further details on the configuration or additional constraints are not mentioned.

ghetto_bird25
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Homework Statement


Figure 24-34 shows cross-sections through two large, parallel, nonconducting sheets with identical distributions of positive charge with surface charge density σ = 2.62 x 10-22 C/m2. What is the y component of the electric field at points (a) above the sheets, (b) between them, and (c) below them?
http://edugen.wiley.com/edugen/courses/crs1141/art/qb/qu/c24/Fig23_38.gif


Homework Equations


E=[tex]\sigma[/tex]/[tex]\epsilon[/tex]


The Attempt at a Solution


my question is how would u find the y component as when using the equation you get E? would you use trig or is there another way?
 
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There is ONLY a y component from each plate, isn't there? Just ask yourself in each region whether the E fields add or subtract. No trig needed.
 
ic...just one quick question, does the rule for cylinders apply for this question so that the center has a net electric field of 0?
 
Compute the E fields on each side, consider direction and add them. There is no automatic rule telling you that the E field in the middle is zero.
 

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