All Questions
39
questions
-1
votes
4
answers
120
views
Why do electrons move in a circuit? [closed]
I am trying to make sense of why electrons move in a circuit.
I did my research and the first answer I got is because of the difference of electric potential between the two points of the battery that ...
1
vote
3
answers
161
views
Moving electrons on the surface of a thin metal sheet with high current
I don't know if this is the right place to ask this because my question is a mix of physics and electronics. I'm in 12 grade, and wish to conduct a simple physics experiment.
I would like to observe ...
- 518
0
votes
0
answers
157
views
Trying to understand electron flow in a rapid start ballast fluorescent light system
While looking into what is required to upgrade a fluorescent tube light to a LED solution, I found that I don't truly understand what is happening with existing fluorescent solutions.
I understand the ...
- 101
-1
votes
2
answers
125
views
Conventional current and electron flow in Arduino
On an Arduino there are some pins named GND, some are 5 V, and so on. If electrons flow from the negative to the positive terminal, then does this mean that they are flowing from GND to one of the ...
-1
votes
2
answers
189
views
Are vehicle electrical components powered from the negative side?
still trying to get my head around electron flow as opposed to conventional current regarding automotive electrical circuits. There seems to be a ton of conflicting information/advice out there so I'm ...
- 75
0
votes
2
answers
88
views
KCL when rate of electron flow is given ; To include electron sign or not
Q) We have to determine the I. Magnitude of electron charge is 1.6 x 10^-19C.
I have fundamental confusion in this problem. Should we consider the negative charge of electron while doing the problem. ...
- 403
0
votes
0
answers
28
views
Repelling charges and current flow
The electrostatic force between two like charges is repelling. This concept is fairly clear to me with Coulomb's law and electric fields. So two electrons will repel each other. Given this statement, ...
- 161
0
votes
3
answers
1k
views
Why is there EMF present when there is no current?
Current means the rate of flow of charge. Electrons are the ones that carry charge in current.
From the definition of EMF (electromotive force),
When no current is drawn from cell, the potential ...
- 145
-1
votes
5
answers
648
views
What does charge on an electron mean?
As I have read , charge is electrons , protons or neutrons.
Now , according to definition of current , current is the rate of flow of charge I.e flow of electrons. Then , I=Q/t . Unit of Q is coulomb &...
- 145
1
vote
4
answers
188
views
Why does current continue flowing in a circuit?
Sorry for the amateur question, but I'm having trouble understanding this phenomenon.
In a closed circuit, electron current flows from the negative terminal of a battery to the positive terminal.
But ...
- 11
1
vote
2
answers
882
views
Electrons flow in Li-ion Battery
I’m new to electricity, and I’ve got a question about electrons flow inside a Li-on battery. A lot of articles and videos show us only Li+ ion flows from anode to cathode through electrolyte during ...
0
votes
4
answers
98
views
Movement of electron in ac current
Movement of electron direction in ac current is continuously changing which leads to more collision of electrons then dc current.From this can we conclude that ac current heated the wire more than dc ...
1
vote
1
answer
137
views
Finding free electron concentration to check authors' calculations for electron drift velocity
I am currently studying Practical Electronics for Inventors, Fourth Edition, by Scherz and Monk. Chapter 2.5.1 How the Shape of a Conductor Affects Resistance presents the following image:
I ...
- 1,281
3
votes
2
answers
546
views
A question about electrons, charges and current
Let's talk about DC, a very simple circuit: a light bulb and a battery.
Some authors say that electrons move from negative to positive and current from positive from negative.
I always thought ...
- 847
3
votes
0
answers
300
views
How is it that two electric currents can travel in opposite directions on the same wire, at the same time, without interfering with each other? [duplicate]
An Introduction to Information Theory: Symbols, Signals and Noise, by John R. Pierce, says the following:
While linearity is a truly astonishing property of nature, it is by no means a rare one. All ...
- 1,281