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Electroboom: How Right IS Veritasium?! Don't Electrons Push Each Other??
PlainName:
--- Quote ---the terminal will push extra electrons into the object creating an overall negative charge.
--- End quote ---
What pushes them?
AnalogueLove1867:
--- Quote from: dunkemhigh on July 04, 2022, 09:34:16 am ---
--- Quote ---the terminal will push extra electrons into the object creating an overall negative charge.
--- End quote ---
What pushes them?
--- End quote ---
The chemical reaction in the battery cells which generates moving ions that release electrons to the cathode and subtract them from the anode.
This means that there is now more electrons than protons in the negative terminal and more protons than electrons in the positive terminal. Thus a potential difference is generated.
PlainName:
--- Quote from: AnalogueLove1867 on July 04, 2022, 10:09:55 am ---
--- Quote from: dunkemhigh on July 04, 2022, 09:34:16 am ---
--- Quote ---the terminal will push extra electrons into the object creating an overall negative charge.
--- End quote ---
What pushes them?
--- End quote ---
The chemical reaction in the battery cells which generates moving ions that release electrons to the cathode and subtract them from the anode.
This means that there is now more electrons than protons in the negative terminal and more protons than electrons in the positive terminal. Thus a potential difference is generated.
--- End quote ---
Sure, but what pushes against an electron to make it move? Is it some physical partical that actually brushes up against it, or a field or what?
gnuarm:
--- Quote from: AnalogueLove1867 on July 04, 2022, 01:51:53 am ---
--- Quote from: gnuarm on July 03, 2022, 01:43:10 pm ---
--- Quote from: dunkemhigh on July 03, 2022, 11:43:13 am ---I am not sure how you manage to reconcile these:
--- Quote from: AnalogueLove1867 ---But an electric field can't exist without an initial movement of charged particles in order to establish a potential difference.
--- End quote ---
--- End quote ---
How about the fact that this statement is wrong. Static electric fields exist, period. No movement required. The moment the wire is connected to the battery, there is a non-zero electric field in the wire.
--- Quote ---and
--- Quote --- pushes against the next electron via their negative electric fields
--- End quote ---
It's a kind of chicken and egg situation: you can't have a field until something moves, but that movement is initiated by a field?
--- End quote ---
Someone is getting their fields crossed (pun intended).
--- End quote ---
Wow, people here are an interesting bunch. If you connect any insulated metallic object to a minus 9v terminal, the terminal will push extra electrons into the object creating an overall negative charge.
When you disconnect the terminal the object will retain its charge because there is no way for the extra electrons to escape to an area with a lower concentration of electrons.
When you discharge the metallic object a small measurable current will pass from the object to ground. That is the extra electrons flowing from the object to ground. The object then returns to a 0 potential.
All conductors have some capacitance. It isn't just capacitors.
No, there is no chicken and the egg situation. In every example you can possibly give, it is a forced movement of charged particles with mass that produces a macroscopic potential difference in electronics.
The energy required to move electrons can come from chemical reactions, thermal energy, Nuclear bombardment, Radioactive decay, macroscopic motion ( turboelectric generators ), compression ( piezo-electrics) etc
--- End quote ---
And what prompted you to provide this lecture to me, exactly? Do you think you are correcting something I've posted?
gnuarm:
--- Quote from: AnalogueLove1867 on July 04, 2022, 01:51:53 am ---
--- Quote from: gnuarm on July 03, 2022, 01:43:10 pm ---
Someone is getting their fields crossed (pun intended).
--- End quote ---
Wow, people here are an interesting bunch. If you connect any insulated metallic object to a minus 9v terminal, the terminal will push extra electrons into the object creating an overall negative charge.
--- End quote ---
That is wrong. An insulated metalic object will be polarized with more electrons further away from the battery minus terminal, and less electrons closer to the battery minus terminal, but the net charge will be unaffected.
Where did you get this idea? Or did you simply mistype it?
--- Quote ---When you disconnect the terminal the object will retain its charge because there is no way for the extra electrons to escape to an area with a lower concentration of electrons.
When you discharge the metallic object a small measurable current will pass from the object to ground. That is the extra electrons flowing from the object to ground. The object then returns to a 0 potential.
All conductors have some capacitance. It isn't just capacitors.
No, there is no chicken and the egg situation. In every example you can possibly give, it is a forced movement of charged particles with mass that produces a macroscopic potential difference in electronics.
The energy required to move electrons can come from chemical reactions, thermal energy, Nuclear bombardment, Radioactive decay, macroscopic motion ( turboelectric generators ), compression ( piezo-electrics) etc
--- End quote ---
Everything after your error can be ignored.
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