Magnetic Field of a Wire
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- Опубликовано: 24 июл 2024
- 032 - Magnetic Field of a Wire
In this video Paul Andersen explains how current moving through a wire will generate a magnetic field tangent to the wire. As the current increases the magnetic field will increase and as the radius from the wire increase the magnitude of the field will decrease. When the current in parallel wires travels in the same direction the wires will experience a force pulling them together.
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Title: String Theory
Artist: Herman Jolly
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All of the images are licensed under creative commons and public domain licensing:
File:Electromagnetism.png, n.d. commons.wikimedia.org/wiki/Fil....
"File:Hans Christian Ørsted Som Ung.jpg." Wikipedia, the Free Encyclopedia. Accessed May 28, 2014. en.wikipedia.org/wiki/File:Han....
"File:Magnet0873.png." Wikipedia, the Free Encyclopedia. Accessed May 18, 2014. en.wikipedia.org/wiki/File:Mag....
"File:Oersted Experiment.png." Wikipedia, the Free Encyclopedia. Accessed May 28, 2014. en.wikipedia.org/wiki/File:Oer....
Jfmelero. Right Hand Rule Is a Physics Principle Applied to Electric Current Passing through a Straight Wire, Resulting in a Magnetic Field. The Thumb Points in the Direction of the Conventional Current (from Positive to Negative), and the Fingers in the Direction of the Magnetic Field., February 29, 2008. Own work. commons.wikimedia.org/wiki/Fil....
---. The Magnetic Field around Two Wires Carrying Current in Opposite Directions Cause the Wires to Feel a Mutual Repulsion., [object HTMLTableCellElement]. Own work. commons.wikimedia.org/wiki/Fil....
---. The Magnetic Field around Two Wires Carrying Current in the Same Direction, Cause the Wires to Feel a Mutual Attraction., February 28, 2008. Own work. commons.wikimedia.org/wiki/Fil....
watched you in 8th grade science classes, still learning from you as a sophomore in college. thanks for great vids!
Same
Does voltage in a wire effect the size of a magnetic or electrical field, thus effecting a parallel wire??
@@nathanieltalker6532 it effects strength of magnetic field as current effects voltage and vice versa
same
this is my favorite science youtuber. everything always makes sense. Thank you, bozeman science
2 pi r is the circumference, not area
These are the first things which I noticed
before deriving it's area. He's not wrong, but in the video it shows 2piR so yes, in that case it's wrong. d(piR^2)/dr = 2piR
what about all the correct things he said, can`t you maybe try to acknowledge that?
oh you beat me by 3 years LOL
lmfao
Thank you, you saved me!! The diagrams are very helpful to understand the directions of forces for parallel wires
These videos are certainly some of the best explained science videos I've seen, keep it up. :-)
Wow, you're videos are really good. I've always been searching for these type of videos with such excellent teaching.
Hi! Just saying you are a great teacher! I love learning from you! Specific and interesting to watch!
You did great! I loved your visuals. I am 33 trying to figure where I am getting him from in my music studio. This helped me tremendously. Now it’s time to experiment and find how and why
I love how you included the history of the discovery! It helps for some reason... :)
That's called the hook, grabbing students attention, making it interesting, making sense of why it is useful. People who have background in teaching and read education/teaching methods books know about this. This is why I like Mr. Anderson's videos so much. I dont just learn how to do it, but I also lean how and why it is useful
( :
Bozeman you are helping me big time!!! Thank you!!!
Thank you! no one else it seems went over the relationship between electricity and magnetism. Kind of an important detail.
you're great teacher never seen before.. keep it up
Brilliant media and explanation!
I guess there is a point that you haven't discussed in this video: when you move a magnet inside a coil that leads to generating current but will any magnetic field be experienced with that? or will it be electrical field? will that field be experienced within the coil only or outside it as well?
Super, clear-cut video!
Thank you very much. I couldn't find videos like this on RUclips Italy. 😊👍🏻
hope u do a example for a coil next... will u be doing optics soon?
it's a great explanation. Thanks Bozeman Science
Thanks for stating conventional current convention. What happens if a single AC carrying wire is in the form of coil and magnets are passed across the coil, does it affect the current flow in the coiled wire?
Cheers Paul, I gotta teach this tomorrow and it has been a while.
What is really needed is a video that shows the difference between wire sizes and number of turns on coils that would actually be used in motors and generators. With and without ferrite or steel cores. Driven as motor and non-driven as generator. Loosely and closely coupled. That would be very useful information to builders.
I have a diagram I would like to share with you. Coils coupled in such a way that most people would think they would cancel each other out. However they do not.
nice video and very thankful to understand about direction of feild but i have read that 2 pi r is the circumference of circle which is equal to length of conductor
thanks a lot!!!! from 5:40-7:30 is excellent!
Amazing explanation sir. Cheers :)
Great explanation and use of graphics! Thank you so so much!!
Mr. Andersen.. what a surprise, I'm learning!
Hi Professor. Could you please explain what a “Field” is?
Also, Why is “Magnetic propulsion” not used in almost everything requiring inertia? Thx. D.
great video!!!!!
made all my doubts clear!!!!
So if you have a wire with current running through it theres an electric field around it. If you have just this setup, and no coil of wire around a nail or something like that to make what we usually call an electromagnet, can the magnetic fields just from the current in the wire itself be used to pick up paperclips etc?
May you upload video on magnetic field direction in wire due to ac source(with animation video)
Thanks for the content
great video, thanks :D
great explanation sir!!!!
you're an amazing teacher thanks!
do you have a video for magnetic field of a current loop?
Great lecture. Just thinking if you represent 1 to 4 fingers as such to demonstrate greater or lesser field strength, ie AMPERAGE. Overall to be excluded from using you pointer finger to demonstrate direction of FORCE
That was really helpful thank you soooooooo much for that God bless you❤️❤️
Can someone tell me why the blue wire posed a Downward magnetic field on green wire as both have same direction of current and magnetic field direction???
Why all of these great teachers are on RUclips 🥺 thank you ❣️ Sir
Thanks so much! I like your enthusiasm!
Absolutely magnificent sir
Thank you , easy to understand
it helped a lot. Thanks!
please explain the magnetic field due to a solenoid as well as a toroid
Good explanation..
Why direction of current is taken as opposite of direction of electron flow ?
very helpful dude, ty!!
Thank you for helping me!
thank u i learned a lot
What will happen to a compass placed on the centre of these parallel wires both in same and opposite directions.?
Why is at 4:00 current going up but somehow magnetic field is pointed to the right? Kinda can't apply right hand rule here?
So I am in the middle of this video when I start hearing weird noises around my home here in France.
apparently 2021 just happened ... anyway, resuming the video.
You already speak English. Part of the image cannot be seen due to caption screening. But thank you very much for your work. It benefits.
Great vid, thanks
If you have two vortices of water next to each other spinning in the same direction, will they come together like two magnetic fields spinning in the same direction?
Did you mean μR instead of μ0 ? Most relative permeability will be 1 in cases like copper and gold but is not the case with iron nickel and others. Is the equation using μ0 or μR? Major differences in values in material.
You're a G. I did not have a great understanding of the right hand rule, but now I do!
OMG!!!!!!! That was amazing!!!!!!!
hi , i wanted to ask why is it actually important to know the direction of the magnetic field ?
OK, a lot of research is available for the norm, which is North to South pull or repellent magnetic field. but, what happen to the magnetic fields with an unconventional series of magnet forced in position with a North-to-North onto the next a South-to-south so forth ten folds -- Q: Does one create a one greater magnetic field around the unit?
Which stronger magnetic field is with high current or high voltage both same turns and same diameter?
Isn't the magnetic field a relativistic effect of moving charges ? ( I have read this explanation somewhere ).
If yes could you explain (with the relativistic effect) why the "polarity" of a wire change when te current change direction ?
Thx :) and sorry for my english xD
awesome sir helped a lot
The left hand rule should be implied? because there is no induction in the blue wire..there is current going in the both wire at the same time?
Awesome man just awesome ...
thank u so much for the video
Thank you sir
4:42 - I see in the picture that the electrons are flowing from positive to negative. Is the image using conventional current flow as an example? I was always taught electrons go from negative to positive.
+Cliff Trainor - As Mr. Andersen's mentioned, it's the conventional current - the old fashioned view of moving protons originating in 1750 - that flows from positive terminal to negative terminal. Since the diagram looked archaic, it makes sense that the picture would have depicted conventional current rather than the current about which you were taught: electron flow from negative to positive terminals (the discovery of electrons was in 1897).
Thanks Doctor!
Mr Anderson, to tell the direction of force acting on the blue wire due to the magnetic field of the green wire, we should use Flemming Left Hand Rule.
At 7.32, your diagram shows field lines of the two wires crossing, which is not allowed! Any comments?
So does the magnetic field get stronger / intenser with amps or with volts?
And is it better to AC or DC if you want a stronger magnetic field?
amps = I
Does voltage in a wire effect the size of a magnetic or electrical field, thus effecting a parallel wire??
This is a great primer for the benzyl which was the experimental device described by project omicron, gravity control research. The only difference is the conductor is spun along its length, and at least four are arranged in a box configuration. This experiment hasn't been completed as yet and I hope somebody will one day give it a try.
Very helpful.
Thank you Sir!
at 6.27, RH rule is force=thumb, field is first finger and current is center finger - so what rule are you using?
i had the same question
It has taken my professor 10 hours (5-2 hour classes) to explain what he has explained in 3 videos averaging 8 minutes each. 24 freaking minutes!
YOU ARE THE BEST
Can you find an induced current on a wire from a parallel wire with an inherent current.
2 pr is not area...if am not wrong it should be circumference🤔
cool very helpful, didn't get the 2 pi r until just now, thanks!
It's not the area, it's the circumference.
bless your soul
So right-hand rule uses current defined as electron flow, not conventional current?
Great video, but there's one thing: I'm pretty sure that mue-naught is 4(pi)*10^(-7)
Just a question. I'm assuming you mean that the greater the radius, the last magnitude the field will have, correct? The way it's worded sounds like thefurther reaching the magnetic field is, do you less magnitude it has. I'm a total noob so that confuses me and makes no sense lol. But because it doesn't make sense to me, means it's probably the right answer LOL
Thanks
now i understood it clearly
What do you do MR. Anderson?
Explanation is marvellous..but circumference of circle is 2 pie r not the area..
Thank a lot sir.
very very thank you
thank you so much....
Wire is used in a circuit, off course. But how do we apply this to cables in AC and DC circuit?
I think 2 pie r is the circumference not the area. 5:30
Superb. Superb. Superb.
Great videos. I'm planning on studying Physics and Chemistry in a few weeks. Do you have any suggestions or recommend any Physics textbooks?
hope it worked out
Thank you so much
Thx following u from Iraq❤️
Right hand rule = conventional current flow
Left hand rule = electron current flow
Shouldn’t he use the left hand rule
@@KatherinePierce_81 no ... because he is talking about the conventional current (which is actually the flow of positive charges)
C_I_I thanks
@@c_i_i510 right hand rule is for induction, left hand for motoric effect
where do you teach?
Is this in any way related to gyroscopic precision?