Ultimate Biot-Savart Law Review

Рет қаралды 110,768

We Are Showboat

Күн бұрын

Here is a link to the worksheet shown in the video.
docs.google.com/document/d/1F...

Пікірлер: 104

@girraiffe 2 жыл бұрын

B field at the center of loop wire bent through angle theta should be mu I theta over 4 PI R, you omitted the pi

@WeAreShowboat 2 жыл бұрын

Arghh. You’re right. Good call!!! Thanks

@pkt1e735 Жыл бұрын

@user-th8pr7no5p Жыл бұрын

doesnt the pi cancel out at 14:16

@jonathanmutua3810 Жыл бұрын

@@user-th8pr7no5p the one cancelling out is the one for half a loop of wire whose distance would be pi*R but the one for a wire bent through angle theta only has a distance R*theta in radians hence there is no pi to be cancelled out meaning the magnitude of B would be (mu*I*theta in radians)/4*pi*R

@JosephAMuniz-hm4jh Жыл бұрын

I was just about to comment on the same thing! I was like, "where did the pi go?!?" lol

@benjaminsoo8500 5 ай бұрын

You are probably the most helpful physics topic reviewer I have ever watched. More than Organic Chemistry tutor because you really help us to solve all kinds of problems while explaining concepts very well. Please make many many more videos like this!

@WeAreShowboat 5 ай бұрын

Wow, that’s high praise. OChem tutor is legendary. Thanks man. Maybe I should buckle down and make an actually complete catalog of videos.

@ryanwhite7827 4 ай бұрын

I agree, this video and the Gauss's law one were immensely helpful!

@Lukas-mq3vv 3 ай бұрын

@@WeAreShowboat the gauss law video is the best on the internet hands down! thanks a lot man

@nioblemorrell807 Жыл бұрын

I have been confused the whole time on how to do those integrals, and I always skipped your video because I assumed "review" meant not enough explanations. So far, It is the first time I truly understand how to deal with these problems and I can't thank you enough !!!

@firstlast7994 2 жыл бұрын

The man the myth the physics legend himself....

@FormerlyChainChompBraden 9 ай бұрын

Taking Physics 2 at university rn and your videos are incredible. Discovered you through Gauss's law and you have never disappointed since. You got nothing on The Organic Chemistry Tutor. We Are Showboat is my go-to for physics help. Incredible job

@Mostafa.Koriem 3 ай бұрын

TOCT and WASB collab would be CRAZY

@IIAryanMajmudarII Жыл бұрын

This was such an excellent video covering something that I initially found complicated when I first came across it. Many many thanks!!

@vrindagrover1970 3 ай бұрын

I’ve a final tomorrow and I swear I’ve learnt so much from this video.. I’ll cry, thanks 😭❤

@abcdefghijk8933 Жыл бұрын

u guys single handedly save my physics grade i love this channel so much

@joshuamarine6883 9 ай бұрын

Fantastic video with great examples and explanation! Especially with the last loop of current problem having that 3-D visualization made everything a lot more tangible.

@frax5051 Ай бұрын

Dude, this is legendary! Keep up the good work! 🔥

@CongressGamingINC 2 жыл бұрын

The AP Physics E&M exam is today in a few hours. I was freaking out the first few periods of school and since I was excused I left early to study and to calm down. I’ve been watching your videos since this morning for a quick review and you’re amazing at explaining the topics in quick and easy to digest ways! Some things are finally starting to click! I don’t know if I’m still gonna get higher than a 1 or 2 as it’s been a rough year calculus-wise since I’m only in pre-calc so you can imagine how some things were difficult to pick up, but at the moment, these videos are easy to follow along to and give me some hope. Thank you so much for taking time to make these💖

@vimuthabeysinghe6 11 ай бұрын

I’m one year late but how did it go? 😅

@carterschuller1583 5 ай бұрын

I’m curious too, not being in calc 2 is wild. How’d it go??

@jadenweiss3170 3 ай бұрын

Super instructive and helpful. Helped me understand some stuff I wasn't grasping in my physics 2000 uni lecture. keep it up!

@khandakeraqib4073 Жыл бұрын

amazing video - 2nd year college student in intro to E&M

@Pokemonzeldabro 2 жыл бұрын

Thank you so much for this vid!! I struggled with this concept for so long and it feels like you've cleared it up for me. Also, you sound like Owen Wilson which was a nice surprise :)

@randomperson9722 2 жыл бұрын

this channel is the only reason I understand E&M

@grifo_-cyan7123 Жыл бұрын

Thank you so much for this video! I love how you calm us viewers down when teaching the concepts 😅

@DarthSpock9940 2 ай бұрын

This was so useful in finally understanding what the cross product in the biot-savart law means. Also saying not to use the biot-savart law to find direction was funny but also super useful in understanding it.

@vivekgupta3692 2 жыл бұрын

Wow sir after a long time.....I love your videos so much ...thank you 🙏

@pomegranate3601 Ай бұрын

wow thank you so much, i never really understood the biot savart law but now i do. you explained it so easy and showed many examples, just amazing dude!!

@tylerwarwick7355 Жыл бұрын

This is an amazing video man keep going

@raysun1681 4 ай бұрын

BRO I LOVE YOUR STUFF, SO GOOD. ACTUALLY CARRYING MY PHYSICS C GRADE

@nkwiakinimbom1409 2 жыл бұрын

Amazing insights!! Thank you for this video.

@salimstation8891 2 ай бұрын

I'm watching this half an hour before my exam

@drewdwyer6875 3 ай бұрын

Thank you so much for this video! You're a talented educator and I have subscribed

@irpiyaprach9555 4 ай бұрын

Man, this is the shit. I really thank you

@abdfa4909 2 жыл бұрын

Thanks for the clear explnation this helped alot ❤

@danielegalasso9675 Жыл бұрын

I love the internet for videos like this

@BenjA-ir7op 2 ай бұрын

muy bien explicado bro, muchas gracias

@danieloladapoolaniregun5320 3 ай бұрын

Great Teacher. Keep it up. Thanks

@Unidentifying Жыл бұрын

your teaching is very good excellent videos

@willclark8946 6 ай бұрын

awesome vid, very good explanation

@theREALmushroomMusic Жыл бұрын

Thank you for this video!

@kendalwilliams5128 4 ай бұрын

so helpful! Thanks so much!

@bonsai2280 Жыл бұрын

Excelent explaining

@enso9448 Жыл бұрын

thank you so much this is amazing

@Festus2022 Жыл бұрын

Great video, Thx!

@spurti 2 жыл бұрын

Ohh at 21:11 clip the sine of the supplementry angle is the same because sin(180°-theta)=sin(theta).

@emiliolarrazabal5360 Жыл бұрын

This was Hella helpful

@jbcyt1192 7 ай бұрын

epic video thankyou

@abirkumarchatterjee1667 11 ай бұрын

Grate to understand😉

@oemr2121 2 жыл бұрын

thank you so much

@szxnv 3 ай бұрын

thanks again :)

@SamoanFor4everxx23 Жыл бұрын

Thanks man!!

@AadiAcademy 2 жыл бұрын

Love u man

@gerardsagliocca6292 Жыл бұрын

Nice job.

@oykubozalioglu1465 2 жыл бұрын

Thank you!

@ilkemkaya8592 Жыл бұрын

hocam aa verdiysen izliycem nedir durum

@braedansmith9516 Жыл бұрын

Good concept review but using numbers to put in a question circumstance would be helpful

@lazysoup62 3 ай бұрын

why no one questions about the beta should be the angle between dl and r? not the angle between r and the axis??

@user-df1gt5xd9l 10 ай бұрын

you are perfect!

@overlordprincekhan 7 ай бұрын

1:52 In the actual documents, the formula is 'mu only' which implies that the magnetic permeability of that medium whereas you have given here 'mu nought'. So, to keep that fact in mind they didn't removed the mu.

@beams6668 2 жыл бұрын

The Goat

@WeAreShowboat 2 жыл бұрын

Beams!!!

@Diana-nn5nc Жыл бұрын

Can you do Ampere's Law for the last problem? Thank you for your help!

@WeAreShowboat Жыл бұрын

I don't think so. Ampere's law would be difficult due to a lack of needed symmetry in the problem.

@czarwu3359 11 ай бұрын

I think all the dB you draw for the last example have the wrong direction. But it does not affect the final answer tho.

@supratiksahoo1813 7 ай бұрын

0:40 I think if you are considering the cross product between dL and r, then the denominator should be r cubes, if it were a simple multiplication sign, then sin theta is ommited, either way. Being a student, I might be wrong, kindly correct me, if I am at fault.

@WeAreShowboat 7 ай бұрын

It’s between Dallas and r hat. R hat has magnitude 1. If I wrote it as dL cross r then yes you’d write it as r cubed in the denominator. I’m pretty sure I talk about this in the video though, maybe not

@squirrelscxrm 2 ай бұрын

i love you so much

@mohammadeyad6790 3 ай бұрын

hi love the video but im just wondering why at 15:19 does the pi also get canceled out ?

@WeAreShowboat 3 ай бұрын

That was a typo. There’s a pinned comment about it. My bad.

@mohammadeyad6790 3 ай бұрын

@@WeAreShowboat np i have another question around 23:02 how did u get the equation on the bottom left ? I'm very new to calc but still have no clue

@kcr_army_666 2 жыл бұрын

Upload videos gravitation, mechanical properties of solids , mechanical properties of fluids.

@theosullivan2292 Ай бұрын

can't you just use ampere's law for infinitely long wire? (assuming current is constant)

@WeAreShowboat Ай бұрын

Yes, Biot Savart is not always the easiest solution

@mrigayu 2 жыл бұрын

Great video! At 6:55, though, I believe the resultant magnetic field due to the current is drawn in the wrong direction. If the current is pointing to the right, by the RHR, the magnetic field should curl in a circle towards us rather than away from us as shown in the video. (Unless I misunderstood what the arrows were representing)

@DavidSantoPietro 2 жыл бұрын

It does point toward us in the video. Maybe the perspective looked weird?

@mrigayu 2 жыл бұрын

@@DavidSantoPietro you're right, it was perspective that got me. I see it now

@spurti 2 жыл бұрын

Hii could you make a video on earth's magnetic field & magnetic dip angle??

@spurti 2 жыл бұрын

It always confuses me!

@anique4497 Жыл бұрын

15:15 why does the pi disappear in the final answer?

@anique4497 Жыл бұрын

nvm i saw another comment that addressed this :)

@kisho2679 2 ай бұрын

in which direction does force point to?

@WeAreShowboat 2 ай бұрын

You have to use a right hand rule to find the direction of magnetic force

@kisho2679 2 ай бұрын

is the electric field parallel to the current?

@WeAreShowboat 2 ай бұрын

In the wire yes, current flows in the direction of the electric field

@il45y78 Жыл бұрын

what is the program used at 5:00?

@WeAreShowboat Жыл бұрын

Geogebra 3d

@il45y78 Жыл бұрын

@@WeAreShowboat Thank you!

@lysonchrischapotera833 Жыл бұрын

Where can I get your lecture notes

@WeAreShowboat Жыл бұрын

Click on “more” under the video. There’s a link

@maxsolomakha4447 7 күн бұрын

I'm not sure that the absolute value of a definite integral is equal to integrating the absolute value inside of it. Timecode: 7:27. Maybe, I got something out of my sight.

@WeAreShowboat 7 күн бұрын

@@maxsolomakha4447 That’s a great point. You’re right. The absolute value of an integral is not equal to the integral of the absolute value of the integrand if the integrand changes sign. So you just have to break the integral up into pieces which have different signs and subtract. Like what I do for the loopy one at 15:23. So this approach still works you just have to be careful not to add pieces which are actually cancelling each other out.

@sanahaskuranage8071 Жыл бұрын

My professor straight up gave us a disk that spins and told us to find the B field at Z axis! Or and the disk spins because current wasn’t given.

@WeAreShowboat Жыл бұрын

That’s going to be a bunch of rings. Take the ring formula and integrate outward

@Karamdadude 2 ай бұрын

i love you

@nguyennhan4348 Ай бұрын

aren't you the guy from Khan Academy ?

@WeAreShowboat Ай бұрын

Yup

@nickreaper6624 Ай бұрын

My guy, I'm about to get in the physics 2 final that I failed last year. This and the amperes law videos helped a lot so if I pass its all thanks to you

@theodoremercutio1600 Ай бұрын

How'd it go? Mine's tomorrow!