That topic is outside the purview of electrons in a circuit.
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Voltage is not "pressure". Pressure is a mechanical and hydraulic term, not an electrical term. Current is rate of charge carrier flow. Knowing that, you should be able to answer your question about "electron increase".
Ratch
Personally, though the term "pressure" may not be an appropriate term to describe Voltage, it's about as good an analogy as can be found when teaching basic electronics. I often used plumbing concepts to convey Ohms Law relationships of E, I & R. Students sometimes need a tangible reference to grasp a concept.
Chris
Chris
Whenever I hear someone use a hydraulic analogy to describe an electrical circuit, I ask if the circuit leaks. Then I ask if anyone got wet. Finally, I ask if hydraulic engineers use electrical analogies to learn their craft.
By the way, Ohm's law is not E=I*R and all its variations. That is the definition of resistance. Ohm's law refers to the resistive linearity of a material. In other words, it is a material property. I can back up what I said if necessary.
Ratch
I use several good texts on electrical science and some good physics books. Then I evaluate what the texts aver. Keep in mind that there is a lot of technical "slang" that does not correctly describe what is happening. Things like "current flow" or "space walking".
Ratch
Where were you when I was arguing exactly this point, and others insisted that Ohms law applies to every component including diodes, transistors, inductors and capacitors, and even "negative resistance" devices.
Bob
It has nothing to do with linearity. Ohms law describes the relationship of voltage to current in a resistor. There are other equations (laws) that define the relationship of voltage and current in other components. For example:
dV/dt = I / C for capacitors
dI/dt = V / L for inductors
Bob
dV/dt = I / C for capacitors
dI/dt = V / L for inductors
Bob
Above sentence does not make sense.
Remember what I said about capitalizing the beginning of sentences?
The resistivity of aluminum is almost 60% greater than copper. Aluminum does have the highest conductivity per weight than any other solid material, however.
What do you mean by the above sentence?
Ratch
Ohm's law is a property of a material, specifically the linearity of its resistivity with respect to the current within. You don't apply a property of a material to anything. It is an intrinsic part of a material. The E = I*R equation that many folks and writings call Ohm's law is really a definition of resistance.
Ratch
Materials and components whose E/I remains constant over a wide range of current is called "ohmic", and are said to obey Ohm's law.
Components like a junction diode whose E/I changes depending on the current is called "non-ohmic", and do not obey Ohm's law. https://www.google.com/search?q=non...1.69i57j0l5.5539j0j8&sourceid=chrome&ie=UTF-8
Ratch.
Here is the thread. Be prepared to be dumbfounded.
The basis is this quote:
I disputed this, thinking it was non-controversial, and got basically no support for my position.
https://www.electronicspoint.com/threads/ohms-law-or-not-ohms-law-that-is-the-question.252367/
Bob
The basis is this quote:
I disputed this, thinking it was non-controversial, and got basically no support for my position.
https://www.electronicspoint.com/threads/ohms-law-or-not-ohms-law-that-is-the-question.252367/
Bob
OK, first things first. The reason I did not participate in that "discussion" was because I did join this forum until 6 months later. You are correct in your assertion about Ohm's law, but you did not articulate the fact that E=IR is the definition of resistance. Furthermore, you should had stated that a definition is not a law. Unfortunately, you also let the arguments drift into areas that did not pertain to the discussion, such as reactance and history. So, after the E=IR is debunked as being Ohm's law, there is only the linearity of resistance left. I will be happy to counter any arguments to the contrary with facts and reason.
Ratch
Actually, I thought I did say that, but I am not up for reading that thread again, or resurrecting it.
The only way I could make what others were saying true was to substitute "Ohms Law" with "some relation between I and V, but it may be non-linear and depend on other variables such as time, frequency, phase, and even history". Which is not what I call Ohms Law.
Bob
The only way I could make what others were saying true was to substitute "Ohms Law" with "some relation between I and V, but it may be non-linear and depend on other variables such as time, frequency, phase, and even history". Which is not what I call Ohms Law.
Bob
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