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1 vote
1 answer
349 views

Voltage drop in a conductor

My textbook, Practical Electronics for Inventors, Fourth Edition, by Scherz and Monk, says the following in section 2.3.1 The Mechanisms of Voltage: In regard to potential energies of free ...
The Pointer's user avatar
  • 1,281
6 votes
6 answers
8k views

How can electricity be positive when electrons are negative?

I don't understand how can a for example a battery be positive charged when the electrons are negative charged? I've read that protons are positive but they can't move so are all electricity negative?
GGGG's user avatar
  • 101
5 votes
4 answers
13k views

So which direction do electrons really flow?

As I understand it, electrons (which are negatively charged) flow towards positive. As a convention, we say that current flows from positive to negative. Is this to say that what you connect the ...
19172281's user avatar
  • 743
0 votes
2 answers
252 views

Conductor interaction with single battery terminal

What really is happening inside a wire and inside battery when I connect one end of wire to the one terminal of battery but not the other (open circuit )? Questions: If I connect to the '+' ...
Nanda Sinha's user avatar
0 votes
2 answers
216 views

Where do electrons go after reaching GND in this Arduino Mega design?

When examining the EAGLE file for the Arduino Mega that I downloaded from their official website, I noticed that the ground (GND) is not connected to anything other than the C4 component, which means ...
Kenny Lee's user avatar
0 votes
2 answers
123 views

Why would electrons cross a cross section when there is no potential difference?

There is a cross section , it's said that electrons move from left to right and vice versa, and the total sum of the electrons crossing this section from left to right is equal to the ones crossing ...
parvin's user avatar
  • 145
0 votes
5 answers
582 views

What does 'Voltage is the energy per particle' expressions mean?

I recently heard the expression that "Voltage is the amount of energy per electrical particle". I am confused about what it means. Isn't every particle have a certain amount of electrical energy? How ...
yoyo_fun's user avatar
  • 803