How Much Work Is Needed to Move a Charge Between Two Points?

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Homework Help Overview

The problem involves calculating the work needed to move a charge between two points in an electric field created by a point charge. The context includes distances from the point charge and the nature of the charge being moved.

Discussion Character

  • Exploratory, Assumption checking, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the approach of calculating potential differences and the work done in moving a charge. There are questions about the appropriate equations to use and whether the correct method has been applied.

Discussion Status

Some participants have attempted to apply the formula for electric potential but express uncertainty about its correctness. There is an ongoing exploration of the problem with no clear consensus on the next steps.

Contextual Notes

Participants note confusion regarding the equations and their application, suggesting a need for clarification on the concepts of electric potential and work done in electric fields.

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Homework Statement


Points A and B are 4.8cm and 7.2cm away from a point charge of -6.2[tex]\mu[/tex]C at point C. AC and CB are at right angles.

a. How much work must be done in moving a 2.0x10^-12C charge from A to B
b. what is the potential difference between points A and B?

Ive been working at this problem with a friend for about a half hour. I have No idea what to do. Everything we tried failed.
 
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I would answer b) first.
 
i tried that.. but maby iwas using the wrong equation. Which equation should i be using?
 
The one which tells you the potential at distance r from a charge Q
 
so V=kq/r. I tried this. It did not work.
 

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