Flow of current. Conductors and Insulators.

AI Thread Summary
When two neutral conductors touch, no current flows between them. A neutral conductor will allow current to flow when it touches a positively charged conductor, moving from neutral to positive. Conversely, current flows from a negatively charged conductor to a positively charged one upon contact. However, when a neutral conductor touches a positive insulator, no current flows. Clarification on these principles can help resolve confusion regarding conductor and insulator interactions.
girlzrule786
Messages
14
Reaction score
0
This is NOT a homework question.. It is just something that is bothering me...

1. If two neutral conductors are made to touch each other, no current will flow..
2. If a neutral conductor is made to touch with a positive conductor, the current will flow from the neutral to the positive conductor...
3. If a negatively charged conductor is made to touch with a positively charged conductor, the current will flow from the negative to the positive conductor..
4. If a neutral conductor is made to touch a positive insulator, the current will not flow...

Which of these is true?? This is really confusing me... Please help, I need it...
 
Physics news on Phys.org
It may not be a homework problem, but it looks an awful lot like a take-home test. What part exactly are you confused on?
 
Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

So here is the motional EMF formula. Now I understand the standard Faraday paradox that an axis symmetric field source (like a speaker motor ring magnet) has a magnetic field that is frame invariant under rotation around axis of symmetry. The field is static whether you rotate the magnet or not. So far so good. What puzzles me is this , there is a term average magnetic flux or "azimuthal mean" , this term describes the average magnetic field through the area swept by the rotating Faraday...
View full post »

Similar threads

I Electric field, flux, and conductor questions
Replies
14
Views
2K
A Voltage and current waves in a transmission line
Replies
4
Views
3K
How will electrons flow in a very long conductor?
Replies
8
Views
2K
B Conductors in the triboelectric series
Replies
2
Views
1K
Force acting on a current carrying conductor within a magnetic field
Replies
2
Views
1K
Electric Field inside the material of a hollow conducting sphere
Replies
11
Views
4K
Electric field due to current carrying conductor
Replies
2
Views
3K
Understanding the Flow of Electrons in AC Circuits
Replies
25
Views
3K
Confused about Polarization and Induction - Static Electricity
Replies
4
Views
5K
Why can't excess charges leave the surface of a conductor?
Replies
3
Views
2K

Hot Threads

Recent Insights

Back
Top