All Questions
Tagged with electricity conductors
159
questions
3
votes
1
answer
708
views
Why is the electron mobility 'irrelevant' in metallic conductors?
This Wikipedia article states in the introduction
Conductivity is proportional to the product of mobility and carrier concentration. For example, the same conductivity could come from a small ...
- 1,292
4
votes
2
answers
87
views
What makes electrons 'more free or less free' to move around?
I understand that conductors allow electron flow because their valence electrons are 'free' to move around.. But what exactly determines this 'freeness' and the lack thereof that separates conductors ...
- 109
5
votes
6
answers
1k
views
What is the exact mechanism of flow of electricity? [duplicate]
When a steady current
flows through a conductor, the electrons in it move with a certain average ‘drift speed’.
One can calculate this drift speed of electrons for a typical copper wire carrying a
...
user223406
2
votes
1
answer
2k
views
Skin Effect Explanation
I do not understand some things about the Skin Effect.
Its Wikipedia definition is:
Skin effect is the tendency of an alternating electric current (AC) to become distributed within a conductor ...
- 1,319
0
votes
1
answer
3k
views
Why can't free electron flow in water to conduct electricity?
This question is related to how batteries work. In a battery, the electrons can only flow in conductors, because they can't flow in the solution.
my own thoughts on the matter:
I believe it is ...
- 103
-1
votes
1
answer
66
views
How electric current is defined in a metal wire?
How current is defined if in a metal wire both positive and negative charge exist? Isn't the total charge/time 0?
- 1,648
2
votes
2
answers
427
views
Is it possible to become electrocuted even if using a Faraday suit on a high-voltage line?
I am a writer. I'm working on a novel (yes, fiction) but want to do my best to present a passage as accurately as possible.
The crux of the question is whether or not someone using a Faraday suit ...
- 21
1
vote
2
answers
490
views
Effect of electroplating on resistance
How will resistance of a wire be affected if I electroplate it with copper will it decrease ? And if yes then will the decrease be significant?
I need to find a topic for my project I thought it might ...
- 11
0
votes
1
answer
2k
views
Charge accumulation in wire
I came across a question about charge accumulation. It states that if a steady current flows in a wire composed of a copper and iron wire of same area (see fig), will the charge accumulate on the ...
- 143
0
votes
2
answers
465
views
How does the current become homogeneous within a circuit?
I have two questions:
In a given circuit with resistances of different values connected in parallel, there is a different build up of electrons when the power source is turned on. Then, how is the ...
- 1,235
1
vote
2
answers
153
views
Creation of electric field inside a conductor
My book says that as soon as the two ends of a conducting wire touches the two terminals of a battery, it generates an electric field inside the conductor. Why?
- 31
1
vote
1
answer
756
views
derivative of the electric field along the normal to the surface near the conductor
how to derive the formula approves the derivative of the electric field along the normal to the surface near the conductor is inversely proportional to the principal radii of curvature?
$\frac{\...
- 83
1
vote
2
answers
919
views
Does electric current create positive ions while flowing through a conductor?
As the conduction electrons are free to move randomly, i.e they are not restricted to a particular atom, then why don't these atoms get positive charge due to loss of these conduction electrons?
- 41
0
votes
3
answers
540
views
Electric shielding skin depth
I read that lower the frequency,the deeper is the skin depth in conductor.If we are using piece of thin conductor,like aluminum foil for example to shield something from electric fields,it would ...
- 734
-1
votes
2
answers
77
views
Some questions regarding electric properties of materials [closed]
I was reading Chapter 29 on Halliday-Resnick-Krane regarding this but couldn't understand these things.
Suppose you have a conductor in an electric field. In normal conditions the field inside the ...
- 1,195