Understanding the Nature of Electricity: Flow of Electrons or Electric Charge?

  • Thread starter Thread starter toneboy1
  • Start date Start date
  • Tags Tags
    Electricity
Click For Summary
SUMMARY

The discussion centers on the nature of electricity, specifically whether it is defined by the flow of electrons or electric charge. Participants clarify that electricity is fundamentally the flow of electric charge, typically represented by the movement of electrons. They also highlight that while electrons drift slowly, the electromagnetic interaction propagates at near the speed of light, creating the perception of instantaneous electrical response. The conversation emphasizes the importance of understanding the distinction between current as an impulse of energy and the movement of electric charges.

PREREQUISITES
  • Basic understanding of electric charge and current
  • Familiarity with concepts of electron flow and drift speed
  • Knowledge of electromagnetic interactions and voltage
  • Understanding of solid-state physics and semiconductor behavior
NEXT STEPS
  • Research the principles of electric charge and current flow in conductors and semiconductors
  • Study the drift speed of electrons and its implications for electrical circuits
  • Explore the relationship between voltage and electromagnetic interactions
  • Investigate solid-state chemistry to understand electron behavior in materials
USEFUL FOR

Students of physics, electrical engineers, and anyone interested in the fundamental principles of electricity and its applications in technology.

  • #91
You are not wasting anybodies time!
No one is forced to post here! It is very satisfying to be able to help and there is so much expertise here that think we are all still learning.
We are all here for the same reason.
 
Engineering news on Phys.org
  • #92
toneboy1 said:
H'mm, ok well if there is a single particle of some charge, and a photon comes buy, would the particle move on one direction for half the wavelength then in the opposite for the other half? (and not get very far?)

Thanks
I think you mean half the period? But yes, basically.
This is the grey zone between QM and Classical.
There is a situation in the Ionosphere where there are free electrons that can be 'seen' to 'vibrate' as a radio wave passes. Again, this is because the energy gaps involved for a free electron in a very low density plasma are very small and a classical approach works fine by treating the plasma as a conductor with the electrons moving one way and the much heavier ions moving (a smaller distance) the other way, as the fields vary around them. Because the electrons are not in a metal, they actually do move a significant distance in the time period of a 1MHz radio wave.

If you don't have access to textbooks then trawl around the net for .org and .edu sites for more reliable opinions. Beware, there are some dreadful, cranky and harmful sites that may read as gospel. Look for a majority opinion if you get confused.
 
  • #93
sophiecentaur said:
I think you mean half the period? But yes, basically.
This is the grey zone between QM and Classical.
There is a situation in the Ionosphere where there are free electrons that can be 'seen' to 'vibrate' as a radio wave passes. Again, this is because the energy gaps involved for a free electron in a very low density plasma are very small and a classical approach works fine by treating the plasma as a conductor with the electrons moving one way and the much heavier ions moving (a smaller distance) the other way, as the fields vary around them. Because the electrons are not in a metal, they actually do move a significant distance in the time period of a 1MHz radio wave.

If you don't have access to textbooks then trawl around the net for .org and .edu sites for more reliable opinions. Beware, there are some dreadful, cranky and harmful sites that may read as gospel. Look for a majority opinion if you get confused.


Thanks for the advice! There is an art to 'trawling', yes I've seen a lot of contradictory information on subjects where you would expect only people who know what they are talking about would contribute to.

I realize in hind-sight that I phrased my question poorly, intuitively I was thinking that only the E part of the photon would stimulate a dipole moment or electrons. I think you answered my queries never-the-less.

TYVM!
 

Similar threads

  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 3 ·
Replies
3
Views
456
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 8 ·
Replies
8
Views
4K
  • · Replies 6 ·
Replies
6
Views
6K
  • · Replies 15 ·
Replies
15
Views
4K
  • · Replies 12 ·
Replies
12
Views
3K
  • · Replies 27 ·
Replies
27
Views
6K
  • · Replies 10 ·
Replies
10
Views
4K
  • · Replies 1 ·
Replies
1
Views
2K