Electric Potential at A and B: Find the Answer

Click For Summary

Homework Help Overview

The discussion revolves around calculating electric potential at two points, A and B, using principles from electrostatics. The original poster has successfully determined the potential at point A but encountered difficulties with point B.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • Participants are examining the original poster's calculations for both points, questioning the methods and formulas used, particularly regarding the application of Coulomb's Law in the context of electric potential.

Discussion Status

The discussion is ongoing, with participants seeking clarification on the original poster's calculations and encouraging the sharing of detailed work to facilitate further assistance. There is an emphasis on understanding the correct application of formulas related to electric potential.

Contextual Notes

There appears to be a need for more detailed information regarding the calculations and the source of the numerical values used by the original poster. The discussion also highlights the importance of distinguishing between force and potential in electrostatics.

moeug1999
Messages
8
Reaction score
0
Homework Statement
The figure below shows two point charges q1 = +5.4 10-8 C and q2 = -5.5 10-8 C.
(a) Find the potential at A
(b) Find the potential at B.
Relevant Equations
Coulombs Law
I found the potential at A, however I tried doing it with B but it says I have the wrong answer.
 

Attachments

  • Screen Shot 2020-01-31 at 10.44.53 AM.png
    Screen Shot 2020-01-31 at 10.44.53 AM.png
    10.4 KB · Views: 206
Physics news on Phys.org
You'll have to show us the work on your attempt if we're to be able to help you.
 
here's my attempt for the first (which was correct) and for the second (which was wrong)
 

Attachments

  • unnamed (1).jpg
    unnamed (1).jpg
    55.9 KB · Views: 203
Can you provide some details about where the numbers come from in your calculations?

What formula are you using for electric potential? The basic Coulomb's Law gives the force between charges, not the potential due to a charge.
 

Similar threads

  • · Replies 7 ·
Replies
7
Views
954
  • · Replies 2 ·
Replies
2
Views
1K
Replies
6
Views
2K
Replies
11
Views
2K
Replies
7
Views
1K
Replies
5
Views
868
  • · Replies 11 ·
Replies
11
Views
1K
  • · Replies 5 ·
Replies
5
Views
1K
  • · Replies 2 ·
Replies
2
Views
2K
Replies
1
Views
2K