Magnetic field around a Wire

[theniclasridiclas]

Compasses. Compi? ha



[ICEGTN]

3:07 is it direction of current or electrons?

[Kaleetos]

@Starcross42 I know this is a very late response, but the direction of the magnetic field's rotation that you are suggesting in the video is incorrect. Even the compasses below your hand show that the rotation is going in the opposite direction. EDDY 1066 above is correct. The grip rule only works with the right hand with the thumb pointing in the direction of current.

[Starcross42]

@Kaleetos At the end you will notice that I deal with both ways of 'mapping' the magnetic field. At the high school level we teach current from neg to pos. But I prepare my students to deal with both because, depending on the university and/or professor, they argue both.

[carbon0f1ce]

positive to negitive ftw

[fuelban]

Fantastic video guy's, very interesting stuff.

thanks.

Thom in Scotland.

[cpcomedy314]

I watched the rest of the video because I saw Bobby Labontes car under the magnets at the beginning.

[MnMgrl913]

WOAH!!!! that black stuff is awesome :D

[willz100]

are the magnetic particles equal in strenghth or is does positive have a stronger force

[hellow533]

mix toner and vegtibal oil, feral fluid..

[dulburs]

Ed Leedskalnin seds, that actualy there is no electricity, but only S and N magnets floving in oposit directions.

[GeneDunno]

Great video here! Make fero-fluid with dry copier toner & mix with vegetable oil to consistency.

[MichaelChin1994]

This guy should pitch products!!!! :-D

[cr9527]

There is no such a thing as Positive Current in a Wire, unless you have Anti-Matter.

[sn1pe352]

wrong

[cr9527]

Thats it, I am wrong? No reasoning?

Here is my reasoning.

At 1st, people thought the positive particles move to form an electric current. but then they soon realise that positive particles never move, its the negative ones that do, in a wire atleast.

[EDDY1066]

I see after watching it again the right hand works for Conventional current flow and the left hand works for actual electron flow. nice vid :)

[EDDY1066]

that comment is for the bloke at the end of the vid. you should watch the vid from the start cause they get it right earlier on

[EDDY1066]

you got that wrong mate the magnetic feild dose change direction when you change the direction of curent. no need to use right & left cause its just the right hand grip rule that works, thumb indicating curent flow and fingers pointing in the direction the magnetic feild is rotating. dont get it confused with flemmings right hand rule for generators and the left hand rule for motors.

[Starcross42]

I understand. This is about something else. Different schools of thought teach positive current, and some teach negative current. When my high school students go off to college they get confused depending on the particular university. This video was to help them understand that, regardless of how you define current, the magnetic field will be consistent.

[UnderManiac]

Current is neither positive nor negative. The potentials between the ends of the wire are either positive or negative, such as on a battery. Current is just the flow of electrons in one direction or the other.

The right hand rule of thumb denotes conventional current flow (electrons flowing from positive to negative). old way

The left hand rule of thumb denotes actual current flow (electrons flowing from negative to positive). new way

[viptutorialscom]

@Starcross42 By convention current in defined as movement of a charge from HIGH to LOW potential. The confusion is that when you look at molecular structure of any conductor you realize that in reality the only charges capable of moving are the outer shell electrons. BUT, when current was being defined, sadly it was though of as "flow of positive charges." If you rationalize it, HIGH potential is simply a LARGE deficiency in electrons. Therefore positive charges "flow" from HIGH to LOW (V).

[TheOneToxic]

@Starcross42

I suggest you stick to physics terms, conventional current (+ to -) and electron flow (- to +)

Dont say positive current etc, some wont understand

[rulz492]

@TheOneToxic agreed

[MIRACLESHAPN]

@EDDY1066 wat he said in the vid is rite...listn to his words closely...he changed his hands frm left to rite due to which the direction remained the same....

[YomasterJon]

nice demonstration I enjoyed that.

[Abercr0mbie4life]

I always assumed that one end was just positive for negative electrons.

[tinanancollas]

you are so hot.

[noviobatavia]

thanks for using halfe a forrest for your staples;)

magnets rule!

[Starcross42]

The truth is that this bin is 'seldom' emptied. This could represent a year of copies at a school... but yes... people waste a lot of paper. My entire class is going paperless with the use of these videos.

[jonnyasprin]

@noviobatavia Luckily "forrests-forests" are a replenish able form of energy.

[tristanbellmane]

Wow, nice work.

[invertedbeardthe2nd]

Once again an awesome explanation of amazing subjects. I wish when I was at school (many, many years ago) we had teachers like you. You are an inspiration.

[Starcross42]

Glad you liked it. Hey, don't forget to 'rate the video'. I think I get points or something.

:)

[invertedbeardthe2nd]

Sorry man, the magnetic field scrambled my brain and I forgot lol. Ive rated it now. Id give you six if I could (and no thats not code for some act of perversion lol)