Are inductors so powerful?

  • Thread starter physior
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  • #1
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Main Question or Discussion Point

hello!

are inductors so powerful that the magnetic field generated in their coils to be strong enough to resist the electron movement inside their wire?

I find that hard to accept

any hint?

thanks!
 

Answers and Replies

  • #2
Drakkith
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I'm not quite sure what you're asking. Are you asking if inductors really experience a counter EMF that opposes a change in the current flowing through them? If so, then yes, they absolutely do.
 
  • #3
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I am asking if that opposition to the power source that inductors, not "experience" as you say, but CREATE, stems from the creation of a magnetic field due to their coils

I am actually asking, if that magnetic field is strong enough to penetrate the metallic wires and inhibit the flow of the electrons within inductor's wires

with the same principle, if I place a magnet properly (ie. with the appropriate direction), near a wire where a current flows, I will inhibit it!

I find that strange, because I experimented with some inductors and their magnetic field was very weak and I wonder how can this magnetic field inhibit the flow of electrons inside the wires
 
  • #4
Drakkith
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I am asking if that opposition to the power source that inductors, not "experience" as you say, but CREATE, stems from the creation of a magnetic field due to their coils
Yes, the coil creates the magnetic field which inhibits the change in current.

I am actually asking, if that magnetic field is strong enough to penetrate the metallic wires and inhibit the flow of the electrons within inductor's wires
Any magnetic field will penetrate the conductor, so raw strength has little to do with this. It's more about the rate of change and the number of turns in the coil.

with the same principle, if I place a magnet properly (ie. with the appropriate direction), near a wire where a current flows, I will inhibit it!
No, you won't. A magnetic field only creates an EMF when it is changing in strength. A static magnetic field has no effect on the current.

I find that strange, because I experimented with some inductors and their magnetic field was very weak and I wonder how can this magnetic field inhibit the flow of electrons inside the wires
Not sure what to tell you. That's just the way it works. If you do the math it will be obvious.
 

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