How does a changing magnetic flux induce an electromotive force in a loop?

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Discussion Overview

The discussion centers around the phenomenon of electromagnetic induction, specifically how a changing magnetic flux induces an electromotive force (EMF) in a loop. Participants explore the relationship between magnetic flux variation and induced EMF, referencing relevant laws and concepts.

Discussion Character

  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant suggests that a loop subjected to a magnetic flux variation will have an induced electromotive force.
  • Another participant confirms the relationship by stating the formula for EMF as ##EMF = \int E \cdot dl##.
  • A subsequent post reiterates the formula for EMF and seeks clarification on the specific "point" referred to in the discussion.
  • Another participant questions the clarity of the term "point" and suggests that a diagram might help. They also mention that any change in magnetic flux over time will induce an EMF and reference Lenz's law, noting that the induced EMF will create currents that oppose the change.

Areas of Agreement / Disagreement

Participants generally agree that a changing magnetic flux induces an EMF, but there is some ambiguity regarding the specific points of reference and the implications of Lenz's law. The discussion remains somewhat unresolved regarding the clarity of terms used and the need for further illustration.

Contextual Notes

There are limitations in the discussion regarding the definitions of terms like "point" and "sides," as well as the need for a visual aid to enhance understanding. The application of Lenz's law is mentioned but not fully explored.

Caio Graco
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Consider a loop which is subjected to a magnetic flux variation. Among the points that turn there will be the electromotive force induced?
 
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Yes. ##EMF = \int E \cdot dl##
 
DaleSpam said:
Yes. ##EMF = \int E \cdot dl##

The induced electromotive force between that point?
 
Caio Graco said:
The induced electromotive force between that point?

What point? Possible diagram could be useful to clarify you're "point".
In terms of induced EMF, any form of change in the magnetic flux over time will induced and EMF now by the ends do you mean sides?
Consider Lenz's law too, when such an induced EMF is created it will induce currents to oppose the change.
 

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