Electric Scalar Potential and Electric Field Intensity

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Homework Help Overview

The problem involves calculating the electric scalar potential and electric field intensity at a specific point due to two uniform line charges, one negative and one positive, located along the x-axis. The original poster expresses uncertainty about how to approach the problem and seeks assistance in understanding the concepts involved.

Discussion Character

  • Exploratory, Conceptual clarification

Approaches and Questions Raised

  • Participants discuss the configuration of the line charges and question the implications of the problem statement regarding the charge values. There is an emphasis on understanding the setup and the nature of the charges involved.

Discussion Status

Some participants are seeking clarification on the problem's details, particularly regarding the charge values and the arrangement of the lines. Guidance has been offered regarding the interpretation of the charge density for the second line charge, indicating that it is indeed the same as the first but positive.

Contextual Notes

The original poster notes confusion about the problem's requirements and the lack of explicit information regarding the second line charge's value, which is a point of discussion among participants.

EbenC
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Homework Statement



A uniform line charge of -4π x 8.85 pCm^-1 is situated between the points (-5,0) and (-2,0) m and another such line of positive charge between (2,0) and (5,0) m.

A) Find the electric scalar potential V at (1,0) m.

B) Find the electric field intensity E at the same point.

Homework Equations



(I think, but I'm not sure)
[PLAIN]http://img684.imageshack.us/img684/6707/80046486.png


The Attempt at a Solution



I really don't know where to begin... any help is appreciated.
 
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Can anyone help me
 
What have you tried?

Where are you stuck?
 
Well, most importantly, I'm having trouble understanding the question, conceptually. The two lines are horizontal, I'm guessing, stretching from (-5,0) to (-2,0) and (5,0) to (2,0). Is this correct?

Also, it doesn't say what the value of the second line is, it just says "another such line of positive charge," so does this mean they're both the same charge?
 
"Also, it doesn't say what the value of the second line is, it just says "another such line of positive charge," so does this mean they're both the same charge? "

It means that the linear charge density for the second charge is:[tex]+4\pi\times8.85\,\text{pC/m}[/tex]
 

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