Voltage, Current, Electricity, Magnetism

Easy to understand animation explaining all basic concepts.

• Category

  Science & Technology

[lcbreezyl]

Good explanation but I thought I read that electric current isn't like saw flowing water. So electricity flowing through a wire isnt charged particles moving through it like water through a hose but more like the desktop newton pendulum toy.

[Eugene Khutoryansky]

It depends on if we are talking about AC current or DC current. AC current will go back and forth, constantly changing direction, as you describe. However, DC current constantly flows in only one direction.

[Eugene Khutoryansky]

Everyone, if you enjoyed this video, you can help more people find it in their YouTube Searches by clicking the like button under the video and writing a comment. Thanks.

[Stephen Nesbitt]

Why does a moving/changing electric field create a magnetic field? I don't see how that works...

[Eugene Khutoryansky]

Think of the magnetic field around a wire carrying a constant DC current. Now insert a capacitor in the wire, so that the charge on the capacitor continues to increase as the current continues to flow. The magnetic field around the capacitor is the same is before, but now there are no charged particles flowing in the area between the two capacitor plates. Therefore, the only thing that can be responsible for the magnetic field is the increasing electric field between the two capacitor plates.

[Stephen Nesbitt]

Yeah but what is it about the moving charge that creates magnetism? why movement? Why is movement special? I just don't see what the mechanism is behind a moving charge producing magnetism... it seems like a huge leap: moving charge...suddenly...magnetism.­..How does that work? What happens in between? :D Maybe I'm just being dumb :P

[Eugene Khutoryansky]

Look at it from Einstein's Theory of Relativity: Each charged particle can believe that it is standing still, and not creating a magnetic field. An observer who thinks the charge is moving will see the charge as shorter and having a higher charge density, and therefore having a stronger electric field in the direction perpendicular to the movement. Moving charges need to create magnetic fields that cancel out this effect, so that it will not be possible to tell which observer is moving.

[JAB7699]

Excellent video!!

You should win a Nobel Prize for being able to take something most teachers make way too complicated and simplifying it for others to understand. Great teaching!

[laharl2k]

3:40 Scrap Brain Zone theme from Sonic 1 :D

[EagleMarine2012]

AC current! so alternating current current?

[DOOMVSHALO]

Was told about this via Facebook, seem's the 2nd song is from sonic. Wish school did stuff like this when I was younger.lol

[Sonicserge]

awesome you got some classic sonic music goin on :3 I heard this at school and was all excited and stuff

[Abin Simon]

best tool for summing up



[kwonj]

4:22 music name?

[Marius L.]

Excellent videos, very easy to understand. I finally know what a magnet is. It's a material that contains a of lot spinning charged particles, duh. Other explanations I've seen were very difficult to understand. I also have a question. How exactly does the movement of particles convert into light? I know that light emission requires heat and heat is motion. So the electron must bump in to molecules or something like that? And why some materials heat up from electric current while others don't?

[Paulo Vítor Oliveira]

This is awesome. I couldn't really understand anything from this subject before this video. Thanks.

[xXDalzalaXx]

Beautifully articulated, love how everything I've learnt just clicks together