Electromagnetic induction: induced voltage in a single wire

Dr Martin Allen explains electromagnetic induction, Michael Faraday's second major discovery, using a coil of wire and a big voltmeter.
www.engf.canterbury.ac.nz
www.epecentre.ac.nz

[@MagnaMoRo]

FYI: Movement of a copper wire trough a magnetic field affects the normal gyroscopic procession of the copper atom's electrons, forcing them to process left or right depending on the polarity of the magnetic field and the direction of approach to that field. This causes free electrons in the wire to be pushed in the appropriate direction. So, each copper atom affected by the moving magnetic field is catalyzed to become a microscopic battery. The faster the wire is pushed through the magnetic field, the greater force of the procession of the copper atom's electrons and the greater the voltage produced by these atomic scale batteries. If the magnetic field is stationary relative to the alignment of the copper wire then there is no procession displacement of the copper atom's electrons, and no voltage is produced. If movement of the magnetic field is stopped abruptly, then the copper atom electrons quickly return to their normal procession. During this period of return to normal procession there will be a detectable high voltage back spike of electron current in the wire.

[@danielbatista8760]

Thank you for your demonstration seeing it made it easier to understand

[@mousehead2000]

Excellent vid.

[@user-yd5vw8cc3q]

thank for nice explaning

[@wahidhamidy6886]

thanks

[@Festus2022]

Great video, but why should the magnetic field induce opposite EMF and current flow depending on whether the wire descends from above or rises from below? How does a left to right magnetic field "understand" whether a wire is going down or coming up into the field?

[@YouBazinga]

Maybe if explained like this. Does the wire/coil enter or exit the magnetic field? And viceversa. Is the magnet moving towards or away of the wire/coil? Of course the direction of magnetic filed is also important to determine the current direction.

[@whitewigglesworth]

This video makes me question something involving my job. I have a guy that keeps putting multiple wires on just one terminal of a communications port of an infinity furnace to "strengthen" the connection between the furnace and the heat pump that the said wire runs to. My question I guess is this - If there are more conductors, even though they are essentially the exact same conductor with the same signal from the same start point to the same end point am I getting more induced voltage from nearby high voltage wiring than if he had just ran 1 wire per terminal due to the extra wires near the high voltage? Somebody please help me out here.

[@michael-gary-scott]

Not sure if you found an answer but it shouldn't cause a huge issue. Assuming you have line and neutral conductors for each cable, the emf will essentially cancel out as equal current is traveling in opposite directions

[@james77011]

💝 nice video 😁

[@aaronhalvorson7278]

But like I've seen a magnet turn things magnetic, so then couldn't this be more about magnet to magnet than any physical wire? Well at that point wouldn't just any old manipulation of a magnetic field equate to electricity? But then voltage isn't real

[@omkardevre3447]

How is voltage created

[@JeffPapenhausen]

Induced voltage

[@MagnaMoRo]

Movement of a copper wire trough a magnetic field affects the normal gyroscopic procession of the copper atom's electrons, forcing them to process left or right depending on the polarity of the magnetic field and the direction of approach to that field. This causes free electrons in the wire to be pushed in the appropriate direction. So, each copper atom affected by the moving magnetic field is catalyzed to become a microscopic battery. The faster the wire is pushed through the magnetic field, the greater force of the procession of the copper atom's electrons and the greater the voltage produced by these atomic scale batteries. If the magnetic field is stationary relative to the alignment of the copper wire then there is no procession displacement of the copper atom's electrons, and no voltage is produced. If movement of the magnetic field is stopped abruptly, then the copper atom electrons quickly return to their normal procession. During this period of return to normal procession there will be a detectable high voltage back spike of electron current in the wire.

[@kwiky5643]

@@MagnaMoRonow that’s some explanation

[@ohmygordd9426]

hello 10C physics

[@h7opolo]

"why er", not "why ah." why do you pretend to teach when you can't even pronounce "wire"?

[@fernandatirado6308]

lil bro what are you on abt. his accent makes it sound like why ah. i say it like that. not everyone has to say things the way you do dumbass

[@fernandatirado6308]

if you google the pronounciation of wire on google there are two ways to say it. he is saying it in the British way. shocking for you there are accents other than an American so shut up

[@MagnaMoRo]

FYI: Movement of a copper wire trough a magnetic field affects the normal gyroscopic procession of the copper atom's electrons, forcing them to process left or right depending on the polarity of the magnetic field and the direction of approach to that field. This causes free electrons in the wire to be pushed in the appropriate direction. So, each copper atom affected by the moving magnetic field is catalyzed to become a microscopic battery. The faster the wire is pushed through the magnetic field, the greater force of the procession of the copper atom's electrons and the greater the voltage produced by these atomic scale batteries. If the magnetic field is stationary relative to the alignment of the copper wire then there is no procession displacement of the copper atom's electrons, and no voltage is produced. If movement of the magnetic field is stopped abruptly, then the copper atom electrons quickly return to their normal procession. During this period of return to normal procession there will be a detectable high voltage back spike of electron current in the wire.

[@jacobvandijk6525]

That's what you already said.