Understanding Dipole Moment: The Measure of Electric Strength Explained"

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Discussion Overview

The discussion focuses on the concept of dipole moment in the context of electric dipoles, exploring its definition, implications, and the relationship between charge, distance, and the forces involved. Participants examine the nuances of what is meant by "strength" in relation to dipoles and their moments.

Discussion Character

  • Conceptual clarification, Debate/contested

Main Points Raised

  • One participant states that the dipole moment is defined as the product of charge and distance between two charges, represented by the equation P=ql, but questions the implications of this relationship regarding force and distance.
  • Another participant clarifies that while the attraction between charges diminishes with distance, this does not affect the definition of dipole moment, suggesting an analogy with gravitational forces and angular momentum.
  • Several participants question the terminology of "strength" when referring to dipoles, suggesting that it may be more accurate to discuss the moment and its associated field and potential instead.

Areas of Agreement / Disagreement

Participants express differing views on the appropriateness of discussing dipole strength, indicating a lack of consensus on the terminology and implications of dipole moment.

Contextual Notes

There are unresolved questions regarding the definitions and relationships between dipole moment, force, and the concept of strength, as well as the implications of distance on these factors.

Abdul Majid
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Dipole moment is the measure of strength of electric dipole and is equal to product of either charge and distance between two charges.
P=ql
but as we know when charges are close the force b/w them is strong n when they are far away force decrease.
But in above equation strength increases with increase in distance as p is directly proportional to l.
Where have i got it wrong?
 
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Abdul Majid said:
Dipole moment is the measure of strength of electric dipole and is equal to product of either charge and distance between two charges.
P=ql
but as we know when charges are close the force b/w them is strong n when they are far away force decrease.
But in above equation strength increases with increase in distance as p is directly proportional to l.
Where have i got it wrong?
Those are two different things. The attraction between them diminishes if they are far apart, but that is not the dipole moment.
There is an analogous situation with masses and gravity. If two masses orbit each other, the attraction between them is weaker when they are far apart, but their angular momentum increases.
 
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What do we mean by strength of dipole?
 
Abdul Majid said:
What do we mean by strength of dipole?
I'm not sure it is right to speak of the dipole having a strength. A dipole has a moment, and the moment has a strength. But the dipole also has a field and a potential.
 

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