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3answers
108 views

How fast does an electron move?

I've been reading this website: www.physics.wayne.edu/~apetrov/PHY2140/Lecture8.pdf to learn how fast an electron moves in a circuit. On page #8, #9 and #10 It says to take the Cross-sectional Area ...
6
votes
2answers
512 views

From where do electrons gain kinetic energy through a circuit?

Supposing an ideal wire, How do electrons accelerate and gain kinetic energy? What I understand: When a circuit is opened ,electrons are crowded at the negative term of the battery and have high ...
2
votes
2answers
51 views

Electric current and drift velocity

I have seen in several textbooks that say that when we connect a conductor with a battery then electrons start moving (drifting) in the battery in random up and down motion in the opposite direction ...
5
votes
2answers
210 views

How far do electrons actually move along a conductor under an alternating current?

This is more or less a curiosity question. But I have had really good luck with stack exchange so far. If I can expand on my question a little bit - it may not be super important, but I know under say ...
-1
votes
3answers
101 views

Current, conductors and charge density

Ok i read that the charge (current) entering the conductor is same as that of charge leaving through the conductor Means current is same at all the points in a conductor having varying cross section....
0
votes
1answer
52 views

Mechanism of electricity in conductors

In mechanism of electricity in conductors my teacher said the free electrons collide with positive lattice and this positive lattice is oscillating about its mean position. Ok for producing current ...
0
votes
1answer
40 views

Is the speed at which electrons move through a conducting wire binary?

If a voltage differential causes electrons to move through a conducting wire, and no other forces are acting against them, will they always move at the highest possible speed through that material? ...
0
votes
1answer
128 views

Best visualization of electric current and voltage

I asked this exact question on the electrical engineering stack exchange, and it was suggested that I post it here: So, I want to know what the best way to visualize what is actually happening in a ...
1
vote
2answers
76 views

Does a battery actually provide electrons or are they the electrons in the wire moving due to potential difference?

When we connect a battery in an electric circuit, does it provide the electrons present at anode, or are they the electrons present in the wire?
4
votes
1answer
267 views

How do electrons actually move in a wire? [duplicate]

Do they jump from atom to atom or are they free-flowing? Where does resistance fit in? Do electrons physically HIT the atoms? If so, how do they hit atoms if the nucleus is small and far away from the ...
3
votes
1answer
181 views

How the current moves in the battery and outside the battery?

Does it move again to the negative terminal or stays at the positive terminal until the electrons all come .so the voltage will.be zero and current flow .I want simple clear explanation because i am ...
1
vote
2answers
193 views

How the current flows in a circuit? [duplicate]

If the electrons and protons are moving in a circuit, then they should cancel each other after crossing the barrier? How is it working?
4
votes
2answers
345 views

Why do electrons follow the conductors shape?

I'm stuck thinking about this situation. I imagine that there are two oppositely charged objects at short distance $r$, put inside an insulator (Can I say air?). They generate a net elctric field, ...
-3
votes
1answer
318 views

How electricity works acutally?

I've been told that electricity is due to flow of charges(-ve charge=electron) that are provided by the battery. And no. of charges that leave battery at one end are equal to no. of charges that re-...
5
votes
3answers
4k views

Why electrons flow through a wire connected to a battery?

I would like to know why does electrons flow through a wire connected to a battery as said in AC/DC: What's the Difference?.It tells that "the electrons that are stripped from the carbon electrode is ...
1
vote
2answers
884 views

Some questions related to circuits and flow of electrons

I have some doubts related to electric fields and flow of current. So, let us assume an electric circuit, which contains a battery and a wire connecting positive and negative terminal of the battery. ...
5
votes
4answers
4k views

Path of EM wave propagation in a circuit wire

The image is my visualization of drift velocity and electromagnetic (EM) propagation of charge wave in a closed circuit. The slow drift velocity of the electrons follows the path of the circuit (a ...