Behavior of inductors -- Why flux linkage does not change instantaneously?

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Discussion Overview

The discussion revolves around the behavior of inductors, specifically addressing why flux linkage does not change instantaneously when a current is applied or turned off. Participants explore the underlying principles related to magnetic fields and electromagnetic laws.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Some participants question the instantaneous change of flux linkage, suggesting it may relate to properties of magnetic fields.
  • Others propose that inductors resist changes in current by generating an opposing electromotive force (emf), prompting further inquiry into the reasons behind this resistance.
  • A participant asserts that the resistance of inductors to change is not due to magnetic fields but is instead related to Lenz's Law and Faraday's Law, referencing fundamental electromagnetic principles.

Areas of Agreement / Disagreement

Participants express differing views on the role of magnetic fields in the behavior of inductors, with some arguing that it is a property of magnetic fields while others contend it is not. The discussion remains unresolved regarding the exact nature of the resistance to change in current.

Contextual Notes

There are unresolved assumptions regarding the definitions and implications of Lenz's Law and Faraday's Law as they relate to inductors. The discussion does not clarify the mathematical relationships involved.

PumpkinCougar95
Why is it that the flux linkage does not change instantaneously ?
is it some property of magnetic fields?
 
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PumpkinCougar95 said:
Why is it that the flux linkage does not change instantaneously ?
is it some property of magnetic fields?

what do you know about inductors when a current is applied to them and then what happens when the current is turned off ?
That will go a long way to answering your question

PumpkinCougar95 said:
is it some property of magnetic fields?

It's not a property of magnetic fields BUT it does have to do with what is happening with the magnetic field around the inductorDave
 
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Well, the inductors resist any change in current by applying an opposite emf. But why do they resist ? Is it something like the magnetic field doesn't want to change immediately ?
 
PumpkinCougar95 said:
Well, the inductors resist any change in current by applying an opposite emf. But why do they resist ? Is it something like the magnetic field doesn't want to change immediately ?

As Dave has stated, it has NOTHING to do with the magnetic field! You are chasing the wrong culprit.

It has everything to do with Lenz's Law and Faraday's law, i.e. basic E&M field from Maxwell equations. I am hoping that the mentioning of those concepts either will trigger your memory (if you've learned about them before), or direct you to do a search on those principles.

Zz.
 
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