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

Click For Summary
SUMMARY

The discussion centers on the behavior of inductors and the reason why flux linkage does not change instantaneously. It is established that this phenomenon is not a property of magnetic fields but is fundamentally related to Lenz's Law and Faraday's Law, which are derived from Maxwell's equations. Inductors resist changes in current by generating an opposing electromotive force (emf), which is a critical aspect of their operation. Understanding these principles is essential for grasping the dynamics of inductors in electrical circuits.

PREREQUISITES
  • Lenz's Law
  • Faraday's Law of Electromagnetic Induction
  • Maxwell's Equations
  • Basic principles of electromotive force (emf)
NEXT STEPS
  • Study Lenz's Law in detail to understand its implications in circuit design.
  • Explore Faraday's Law of Electromagnetic Induction and its applications in inductors.
  • Review Maxwell's Equations to gain a comprehensive understanding of electromagnetic fields.
  • Investigate the role of inductors in AC and DC circuits, focusing on their behavior during current changes.
USEFUL FOR

Electrical engineers, physics students, and anyone interested in understanding the principles governing inductors and electromagnetic induction.

PumpkinCougar95
Why is it that the flux linkage does not change instantaneously ?
is it some property of magnetic fields?
 
Physics news on Phys.org
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
 
  • Like
Likes   Reactions: cnh1995
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.
 
  • Like
Likes   Reactions: davenn and cnh1995

Similar threads

Undergrad Magnetic Flux Linkage: Rate of Change & Cutting
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad The rate of change in the magnetic field linkage in a coil
  • · Replies 19 ·
Replies
19
Views
4K
Graduate Flux linkage in inductance calculation for single wire.
  • · Replies 6 ·
Replies
6
Views
4K
Undergrad Help me understand magnetic flux linkage
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Why Inductors Create Large Voltage When Switch Opened
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Clarifying the notion of Flux Linkage
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Why wouldn't two inductors provide a lag of 180 degrees?
  • · Replies 7 ·
Replies
7
Views
2K
Equivalence of various forms of flux linkage
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Inducing currents without change of flux linkage?
  • · Replies 3 ·
Replies
3
Views
2K
High School Experiment issues (electromagnetism)
  • · Replies 42 ·
2
Replies
42
Views
3K