Alternating Current Explained 

I am not so sure about the 'north pole being positive pole' induced current depends on the change of magnetic field rather than which pole it is close to

In my understanding changing magnetic field causes the electron to flows, not the poles, if ploes were to cause the flow, a static magnet exposed to the static conductor should produce the current which is what this video implies in the beginning but this is not the case.

I watched almost 50 videos on this topic and this is the best and comprehensive with basics of AC. I know there is some mistakes but the concept is clear ❤️

this is the best video on the topic. Thanks a lot

THANK YOU ! I wish you would have more videos !

Great next alternative science video!!!. Maye you should go back to 101 electricity and magnetism

Sorry, but this video is misleading the viewers. According to your explanation, if we connect both sides of the magnet with a copper wire, we will get an endless current of electrons from '-' pole to '+' pole, which means an endless free electric energy. It is not a case in real life. It is not the way how electricity is produced. In order to move the electrons through the conductor, the conductor needs to cut the magnetic fields.

nice video. just one thing, a cycle is not called a Hertz (Hz), a cycle per second is 1 Hz. So to say "60 Hertz per second is not accurate. Nit picking really, good job overall.

I liked the video very much. Thank you very much.I got some clear conseptions

There are several things wrong. Magnets don't have positive or negative ends and they do not attract or repel electrons (see Lorentzforce).

Este video me ayudó a entender el concepto de AC para mí examen de CompTia A+. 🙌🏻🙌🏻

Well done - well explained

Thanks for explanation, Sir. Anyone from college or university just one advice pls go to complete depth of everything u learn or u will too many problem in future.

Good video but I didn't see the third phase revisited and explained at the end. I assume it is the other two phases neutralizing each other so does it really exist? Also, the motion of the electrons does not match up properly in a few places. It's a better presentation that I've seen before and I studied physics thru quantum.

conflating the north and south poles of a magnet with positive and negative charges is really wrong and i think confuses the issue. This is a bad oversimplification, as others have mentioned, if the way you explain this were correct we could use magnets for endless current.

You learn new stuff everyday

Indeed, this video was inaccurate, having made many misconceptions. What I also perceived, was the explanation of the principle: ‘Electromagnetic induction’ (the video did not explain it correctly). This is how it ought to have been explained : If a magnet is stationary, it will not induce an electromotive force (electrostatic potential difference) across a conductor (in which case, a coil is used). However, if the magnetic flux varies periodically, this will be what will induce an electromotive force across an electrical conductor (a coil). Using a galvanometer, you can measure the constant change in current. Overall, this video was misleading. (A magnet has a North and South Pole, which was not mentioned in this video). Accelerating charges (also molecular magnetic dipoles, fermions with a half-integer spin, intrinsic magnetic moment) will be able to produce a magnetic field. An electric field, however, can be produced by stationary charges. In case you are intrigued, transformers (step up and step down transformers), wireless chargers, eddy currents, magnetostriction and even motors also work on the same principle, ‘Electromagnetic induction’. In a transformer, electromotive force will not be induced to the Secondary Coil (from the primary coil) if the magnetic field doesn’t vary (AC ==> Alternating Current). Just like how this doesn’t work with DC (direct current). With DC, you will only see minor surges of current from voltage modification. (minor) More Evidence: Formula (induced electromotive force): ε = ΔΦ -- Δt Φ = magnetic flux Δ = change in t = time ε = induced electromotive force (electrostatic potential difference, or, voltage) - - - - - - - - - - Φ = BA cos θ B = magnetic field A = area θ = angle between a perpendicular vector (90 degrees) to the area and the magnetic field Φ = magnetic flux Magnetic flux is the sum of all of the magnetic field passing through an area. __________________ You can also watch videos from Lesics, Engineering Mindset, ElectroBOOM, Physics Girl, Veritasium, EEVBlog… they describe this in greater detail.

i have a que. that can ypu plzz explain flow of electrons from ac generator to our home during ac current flow.like whwn i turn on my fan so what will happen to the electrns in wire.please.

mixed magnetic poles with electric poles (+ve and -ve),, don't understand how??

Hey great video. I have a question, my concept my be wrong about electricity but I need an answer. My question is ,in AC current changes its direction at 50 Hz or 60 Hz, doesn't it means that in case of single phase that we get at our homes the two wires hot and neutral, neutral wire must be hot wire during the negative half cycle. ? Thanks in advance. How does that work.

great explanation

Gracias no puedo creer todo lo que aprendi en un solo video

so basically if the electrons taking the place of the other electron immedietly, i can turn on a lightbulb on the moon faster than the speed of light?

The magnet spin the electrons move. What's wrong with that?

Thank you very much. This and your 3 phase video explained an awful lot to me especially the 3 phase videos.

Here a dumb question (I’m new). where is this spinning magnet located?

Just make more videos on electricity and magnetism if u do this I will subscribe you because you made this concept very easy to me that any child will easily understand

Great video, but there are a couple of small errors around minute 3:40. 1) You confused a Hz with a wavelength. Hz is how many cycles occur per second. It is not the distance associated with / the visual representation of one cycle (which is what you showed) because that would be the wavelength. 2) You also then said # Hz per second. That equates to saying "# cycles per second per second" or "# cycles per second squared". You should have just said # Hz, which would mean # of cycles per second.

Thanks Alot For This video

Wait I thought only a changing magnetic field could produce current in a coil? Does this imply that just placing a magnet can make the electrons move and therefore produce current ?

Surprising this is the 999th video i watched on youtube, Yeah this really helps for a test im having on electricity

2:15 Omg I finally understand current! Thank you, sir!

Nice teaching style

1:41 So if I leave a magnet near a copper wire I would be generating an endless amount of electricity? Why we use batteries then? we should use magnets instead

Why does the current change direction though?

Why ac change direction& polerty.please tell about this

great video but why put such loud music in the background...

Brilliant brilliant brilliant 🏆👍

Thank you so much

What is the background music?

Sorry but the AC generator model is a bit oversimplified and thus a little misleading. If you draw a loop of wire near the magnet which is a better representation, you'll see that electrons flow both towards and then away from a pole at the same time so the movement can't be based simply upon attraction to a "+" or a "-" as with DC circuits. The magnetic forces produced by a north pole push electrons one way around the loop according to well defined laws of physics, and a south pole causes them to move the other direction. And electrons do not move in a stationary magnetic field regardless of the "+" or "-" so the magnet has to always be moving, although the electrons will stop momentarily when the magnetic force is zero such as it is when the coil is in between north and south poles. Further, utilities don't spin wires inside of magnets to generate electricity, we spin magnets inside of coils of wire to generate electricity.

wow... You clear my big doubt of AC. wonderful explanation. I became your faan

Sir... The way you explained AC is too good

Thank you

volt topic was missing...nice expln

Oh no... This video is incredibly wrong and misleading.

Professionally made, great analogies and images.

Thank you for getting into basic chemistry 101. Because every time you say nuculus, I get a little dumber.

Thanks

Did you just say that electrons are attracted to the positive part of the magnet? That is incredibly wrong. First off, we don't talk about positive or negative sides of a magnet. It is north and south. That is not only semantics. We use different terminology to emphasize that magnetic poles are distinct from electric charge. Neither attracts or repels the other. They only affect each other when one or the other is changing.

Thank uvery much👆👆👆👆👆👆👆

One of the best I 've seen.

i'm 48 with a few college degrees and I'm still confused :(

that whole statement that Current is said to flow in the opposite direction of electrons is so unintuitive and BS of course Franklin came up with that

Not "millions of electrons" moving in a copper wire; try many quintillion times that. One gram of copper has about 3 x 10e23 or 274,920,000,000,000,000,000,000 electrons, give or take one or two. Way more than millions would be moving in a copper wire with measurable voltage.

Complete NOOB here. Your example with the car, intrigues me. If voltage is, the potential "energy to do work" and AC current alternates back and forth, how can any work be done? Imagine a man [representing AC current] sets one foot outside of his house to go to work, but then takes one step back and vice versa... How can he ever get to his job [to work], if his ratio of motion is 1 to 1[one step forward, one step back] It seems to me, that a minimum of 2 to 1 [two steps forward and one step back] would be necessary for this man to adopt, if he is ever to get to his job. So, if electricity is constantly being pushed out of the mains at the same ratio, as it is being sucked in, how can ever get to my toaster - to do work? Please let me know, I want to learn.

as others commented , this is nonsense, magnets dont attract or repell electrons. Moving magnets do, and not in the way explained

This is oversimplified to the point of being inaccurate.

start with the generator

Mr. Copper is non magnetic material

Hi

I am baffled as to how this has so many positive votes. Electrical charge and magnetic charge are far from identical. You will not get a flow of electrons to a magnet unless there is a CHANGING MAGNETIC FIELD. This video needs to get taken down with how many people this is misleading. This video is full of basic misunderstandings as to the nature of electricity.

Music wrecked the video

This video is shockingly wrong for being so high in the youtube search results... static magnets do not just make current flow... Changing magnetic flux makes current flow.

Are you whispering?

Nj B

base on the comment section im unsubscribing

nikola tesla invented alternating current

WRONG! Whoever wrote this video clearly does NOT understand electricity and magnetism, and has basic concepts dead wrong. This video doesn't just fail to educate, it actually undermines understanding of the real principles. Magnetic poles are not "charged", and do not "attract electrons". The material in this video is like someone wasn't paying attention on class, did not do the homework, and then was suddenly asked to present the material to the class and is BS-ing their way through it.

Im the 101th. gargle my test-

why are you whispering

nerd

Make me laugh hz per second thats not science

Completely misleading

nah i didnt like it either, and too lazy to give the many reasons why... but thank you any way, I am sure it will help someone....

Static charges respond to electric field, not to magnetic field. It is the moving charges that respond to magnetic field, but are deflected orthogonal to the direction of their motion, and therefore no work is done on the charges. Please remove this video for its false content.

this is copied

Lol why do you make these videos? There are so many better videos on RU-vid that explain all aspects of electricity.