What is the Electrical Potential Between Two Point Charges?

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Homework Help Overview

The discussion revolves around calculating the electrical potential between two point charges, specifically focusing on the potential at a midpoint between charges of 3.4 microC and 6.6 microC separated by 0.10 m.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the formula for electrical potential from a point charge and question the application of a negative sign in the potential equation. There is an exploration of the implications of distance on potential and a reference to related concepts in electric fields and forces.

Discussion Status

The discussion is active, with participants providing insights and corrections regarding the potential formula. Some guidance has been offered regarding the correct interpretation of the potential's behavior near positive charges, and there is an ongoing examination of the relationship between potential and electric fields.

Contextual Notes

Participants are navigating through the implications of the formulas provided and the assumptions made about the signs in the equations. There is a noted lack of consensus on the correct application of the potential formula.

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Two point charges with the values of 3.4 microC and 6.6 microC are separated by 0.10 m. What is the electrical potential at the pont midway between the two point charges? (kc= 8.99 x 10^9 Nm^2/C^2)
Please help me out!
 
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electric potential

The potential at a distance "r" from a point charge of Q is given by:
[tex]V = \frac{kQ}{r}[/tex]
 
Doc Al said:
The potential at a distance "r" from a point charge of Q is given by:
[tex]V = \frac{kQ}{r}[/tex]


V= -kQ/r i just added a negative sign to it to make it more sophesticated
 
sophisticated but wrong :-)

jatin9_99 said:
V= -kQ/r i just added a negative sign to it to make it more sophesticated
The minus sign is incorrect. The potential increases as you get closer to a positive charge. (The zero potential is taken to be at r = ∞.)
 
He might of been thinking about E= -dv/dx... kinda like F= -dU/dx...
 

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