Magnetic Force Between Two Parallel Current Carrying Wires, Physics & Electromagnetism

Рет қаралды 203,049

6 жыл бұрын

This physics video tutorial explains how to calculate the magnetic force between two parallel current carrying wires using a formula derive from the equation of the magnetic force on a current carrying conductor and another formula which relates the magnetic field of a wire. This video on electromagnetism contains many examples and practice problems for you to work on.
Magnetic Force on a Current Carrying Wire:
• Magnetic Force on a Cu...
Magnetic Force on a Moving Charge:
• Magnetic Force on a Mo...
The Homopolar Motor:
• Physics - Homopolar Mo...
The Lorentz Force:
• Battery Powered Electr...
Magnetic Field of a Current Carrying Wire:
• Magnetic Field of a St...
___________________________________
Magnetic Sensors - The Reed Switch:
• Magnetic Sensors - The...
Magnetic Force Between Two Parallel Wires:
• Magnetic Force Between...
Ampere's Law - Magnetic Field of a Solenoid:
• Ampere's Law & Magneti...
Magnetic Field of a Toroidal Solenoid:
• Magnetic Field of a To...
Magnetic Field of a Moving Charge:
• Magnetic Field of a Mo...
____________________________________
Torque on a Loop - Magnetic Dipole Moment:
• Torque on a Current Lo...
The Hall Effect:
• Hall Effect Explained,...
Magnetic Flux:
• Magnetic Flux, Basic I...
Faraday's Law of Electromagnetic Induction:
• Faraday's Law of Elect...
Lenz's Law - Induced Current:
• Lenz's Law, Right Hand...
_______________________________________
Final Exams and Video Playlists:
www.video-tutor.net/
Full-Length Videos and Worksheets:
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Пікірлер: 63

@TheOrganicChemistryTutor 6 ай бұрын

Final Exams and Video Playlists: www.video-tutor.net/

@TokiBird 6 жыл бұрын

What keeps you so motivated to learn and know all this stuff? I just finished organic chem and all your videos helped me through tough times. I know for sure these new physics videos you are uploading will help me next year when i take the course. But just wondering, are you just genuinely interested in the science courses because it it seems you are self-taught and are able to teach others in such a simple and understandable way!!

@amarelli9304 4 жыл бұрын

Pseudonan you said it in your first sentence... learning

@mattphorwich 3 жыл бұрын

Youre the best! Great videos for learning the steps and how to apply them.

@ada3360 3 жыл бұрын

hey, so i used your videos for my math lessons last year, and i'm pretty sure i used to fall asleep and the videos would still be playing, so ever since then i always think of 'sleep' when i watch your videos loool! thank you for all the work you do though!! you are a lifesaver!

@balajothiadithya3144 3 жыл бұрын

Dude you are my hero.Thanks for making Physics so interesting.

@andrewmbugua265 3 жыл бұрын

Thx for helping us all prepare for our various papers,Great Channel

@unitedforever6470 3 жыл бұрын

Thank you very much for the videos sir. I just saw my result and it was fabulous 💖💖💖

@miguelmicallef1415 5 жыл бұрын

very helpful videos keep it up

@Error-xd7cb 6 жыл бұрын

Thanks for your videos Mark.

@anamikasrivastav780 2 жыл бұрын

How do you know his name is mark?

@lambdamax 3 жыл бұрын

When you do the right hand rule and curve your fingers around the wire, can you thing of the direction of the fingers as the North-South direction of the field lines? Which would mean that if you have two magnetic North-South lines created from two currents from two different wires traveling at opposite directions, that's why the magnetic forces felt between the wires are repelling?

@jesusmrosario-claudio4104 3 жыл бұрын

Thank you once again.

@adarshkrishansharma5796 9 ай бұрын

You are just great ❤

@sangamxghimire Жыл бұрын

You should change the name of channel because you teach whole Science ( Physics, Chemistry & Mathematics)

@annabellewagner8510 2 жыл бұрын

why did i just happen to stumble upon this channel only two weeks before the last day of school 🤦🏼‍♀️

@darkslayer5558 Жыл бұрын

GOAT Bro saving me during exams 🐐

@nomoregoodlife1255 3 жыл бұрын

could someone please explain to me what an interaction would look like between two lines of opposing flow. Either because the energy is really high or because the lines are very close? Would it never spark because there is no attraction? thank you c:

@Steak134 3 жыл бұрын

He explains what happens with 2 wires of opposite current in the beginning. He said that there is a force pushing the wires away from each other. It's safe to assume the current doesn't jump between wires, you're just overthinking it.

@nathanieltalker6532 2 жыл бұрын

Does voltage in a wire effect the size of a magnetic or electrical field, thus effecting a parallel wire??

@emredemir6568 2 жыл бұрын

Thanks...

@CapSher 2 жыл бұрын

this man does everything lol

@flopateernasef4403 6 ай бұрын

that was awesome! but i have a question what will the equation be if they have diff lengths?

@Melikam-nf4pn 3 ай бұрын

All I want to say is just thank you

@Alepposharaf 4 жыл бұрын

For question number 2, is it suppose to be half of the calculated magnetic force? since each one of the wires is generating a force that would lift the bottom wire against gravity.

@williamarchacki571 2 жыл бұрын

The bottom wire only feels the force being exerted on it by the top wire. The force that the bottom wire "emits" to act on the top wire doesn't cause the bottom wire itself to move. Think of it like Newton's third law.

@el_witcher 4 жыл бұрын

3:53 why does he take the B from the wire on the left? The wire on the right also produces a magnetic field. Why can we not use it in the equation for the force? We have its current and could use that R=2. Why can't we do this?

@rube9169 4 жыл бұрын

I believe he did this because he is calculating the force *from* wire 1 *onto* wire 2. The equation he uses to find the force is (at your timestamp) where the arrow is pointing. You need F = i2 * L * B

@sameerrai4479 2 жыл бұрын

What to do if we have different lengths wire?

@pirateevs9942 3 жыл бұрын

can I ask how to compute the length of each wires if it is not given??

@Steak134 3 жыл бұрын

If it gives you all the other unknowns (the other current values and the magnetic force) then you can solve for the length.

@rocklee7737 4 жыл бұрын

What if your question simply writes 'per unit length' and doesn't describe the length of the wires.

@jasontodd6464 3 жыл бұрын

What I'd do is just assume I have 1 unit of length (probably meters) and solve for that

@kayla177 4 жыл бұрын

For question 1 I keep getting 5x10^-4N

@paranthamanv5609 4 жыл бұрын

Kayla I think u might have not converted the cm to m

@ltsgobrando 2 жыл бұрын

🙋‍♂️ Hey dude, I got a dumb question for ya over here. Now I can't seem to find the answer, though that's probably due to my lackluster Google-fu skillz. Anywho, as I understand it the easiest to combat the magnetic fields generated by wires with roughly equal currents traveling in opposite directions is to have them wound together. The currents create opposing magnetic fields at nearly the same location, which results in essentially no magnetic field being generated. What I'm unsure of is where the energy those magnetic fields goes. Are the wires respective magnetic fields still created its just that due to their proximity the field lines are highly concentrated between the two? Does that just lead to an elecromotive force in conductors in opposition to their currents and increase their resistance? Moreover does that lead to additional heating of the wire/ noise in any signal? Do they simply cancel one another out completely so the energy never dissipates from the current? Is it lost in some other way ie. ultralow frequency radio waves? Or am I actually as dumb as I'm feelin and have missed something blatantly obvious?

@BTSDYNAMITEHOT 5 жыл бұрын

What about 3 parallel line?

@tagekumarpaul7474 5 жыл бұрын

Same thing just add or subtract B depending on direction

@CubeSapien 4 жыл бұрын

hey what white board app do you use

@darenminarolli1843 3 жыл бұрын

the black board bro cmon dont be racist

@mathmachine4266 3 жыл бұрын

What happens if they're of different length? Newton's third law says that the force of wire 1 onto wire 2 has to be equal and opposite to the force of wire 2 onto wire 1. Doesn't that necessitate that µ0*I1*I2*L2/(2πR) has to equal µ0*I2*I1*L1/(2πR), thus that L1 has to equal L2?

@woodychelton5590 Жыл бұрын

that's what i've been wondering

@mollysolomon6191 5 жыл бұрын

I dont get how the palm is pointing to the right. When I do the hand motion my palm just goes down?

@TheFufuBerry 5 жыл бұрын

make sure you use your right hand, and point your thumb straight down (following the down arrow for i2) and then point your fingers straight out in front of you, (into the page, for B) the only way to position your right hand like this is for your palm to be facing to the right

@mba2ceo 5 жыл бұрын

Fleming's left hand rule ... usually most PROF skip over it

@prettylies8828 Жыл бұрын

Can u tell me what is this meu naught (uo) called

@kenvecinal823 Жыл бұрын

permeability of free space

@70shahin 4 жыл бұрын

Can someone please tell me, which wire should we choose if the lengths are not the same.

@bloodredcherry8435 4 жыл бұрын

If you want to determine the force on wire 2 then L should be the length of wire 2.

@hamzaahmed8578 4 жыл бұрын

@@bloodredcherry8435 The theory states that the Force is proportional to the product of the two currents in the wires. This only remains true given that the lengths of the wires are the same right?

@TomiBorchert 2 жыл бұрын

yesyesyes but how much the current changes??? example in transformers, current produces mfield, mfield makes current run in the second wiring. The change in amperes. the relatioship. Reduction, Boost, no affect? we assume the second wire has no voltage, no current. To produce current of 1amp, how much current/voltage do we need in the first wire. Let's assume they are like within 1cm.

@graveesports486 3 жыл бұрын

Organic?

@shuewingtam6210 2 жыл бұрын

You said 'right hand rule. Correct saying is left hand rule since magnetic field going in the screen. Anyway, direction of force shown is correct.

@hellmuth26 4 жыл бұрын

Normal people: "length" Organic Chemistry Tutor: "lenf"

@stevealexander8010 4 жыл бұрын

Uhh - there is a G in 'magnetic'. (minor nit to an otherwise nice explanation)

@rubiess1 3 жыл бұрын

dude what

@bartsimpson4668 3 жыл бұрын

Oh shoot. I didn’t understand anything until you pointed that out. Thanks!

@AmanAmare-tz7if 4 ай бұрын

Exercise 1. Two straight long parallel wires, separated by a distance of 1.0 m, carry a current of 4.00 A each. A third wire is arranged perpendicular to the two parallel wires. If the magnetic field at a point equidistant from all the wires is zero, find the current in the third wire. guys please help me for tomorrow

@alchemy1 3 жыл бұрын

What makes you say if the force is attractive or repulsive. It is certainly not the direction of the force of each wire by itself. If that was the case, put a third wire on the far right with its current moving as the first wire, i.e. north. Now what you gonna do? It is arrow will be pointing to the left while your B wire's arrow will be pointing to the right? CONFUSING AS HELL. The thing is, in every other areas, forces are always viewed as push force, not pull. A force is always exerted on things has the mental picture of pushing. The magnetic force is the only place that the arrows direction is not a push force but a pull force. When you see an arrow pointing at something, it is not pushing on it, it means pulling on it. This has never been verbalized.