@@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
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
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!
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 !!!
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💖
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.
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
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.
@@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.
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
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.
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 :)
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.
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!!
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.
can someone explain why the questions at @17:29 and @18:11 have different signs (adding and subtracting) of the radius a and b?? The question @18:11 is said to have both magnetic fields pointing into the screen, but with this, shouldn't @17:29 also have both facing the same direction??? if anyone even understands what im asking
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)
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
Arghh. You’re right. Good call!!! Thanks
.
doesnt the pi cancel out at 14:16
@@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
I was just about to comment on the same thing! I was like, "where did the pi go?!?" lol
muy bien explicado bro, muchas gracias
The man the myth the physics legend himself....
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
TOCT and WASB collab would be CRAZY
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!
Wow, that’s high praise. OChem tutor is legendary. Thanks man. Maybe I should buckle down and make an actually complete catalog of videos.
I agree, this video and the Gauss's law one were immensely helpful!
@@WeAreShowboat the gauss law video is the best on the internet hands down!
thanks a lot man
@@ryanwhite7827 fr
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 !!!
amazing video - 2nd year college student in intro to E&M
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💖
I’m one year late but how did it go? 😅
I’m curious too, not being in calc 2 is wild. How’d it go??
Man, this is the shit. I really thank you
Super instructive and helpful. Helped me understand some stuff I wasn't grasping in my physics 2000 uni lecture. keep it up!
I'm watching this half an hour before my exam
I’ve a final tomorrow and I swear I’ve learnt so much from this video.. I’ll cry, thanks 😭❤
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.
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
This was such an excellent video covering something that I initially found complicated when I first came across it. Many many thanks!!
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.
@@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.
I Loved this video! Very thanks!
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
How'd it go? Mine's tomorrow!
can't you just use ampere's law for infinitely long wire? (assuming current is constant)
Yes, Biot Savart is not always the easiest solution
Wow sir after a long time.....I love your videos so much ...thank you 🙏
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.
this channel is the only reason I understand E&M
u guys single handedly save my physics grade i love this channel so much
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 :)
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.
Thank you so much for this video! You're a talented educator and I have subscribed
Dude, this is legendary! Keep up the good work! 🔥
Ohh at 21:11 clip the sine of the supplementry angle is the same because sin(180°-theta)=sin(theta).
aren't you the guy from Khan Academy ?
Yup
BRO I LOVE YOUR STUFF, SO GOOD. ACTUALLY CARRYING MY PHYSICS C GRADE
why no one questions about the beta should be the angle between dl and r? not the angle between r and the axis??
thanks again :)
Thanks for the clear explnation this helped alot ❤
Good concept review but using numbers to put in a question circumstance would be helpful
i love you
This is an amazing video man keep going
awesome vid, very good explanation
Grate to understand😉
your teaching is very good
excellent videos
Great Teacher. Keep it up. Thanks
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!!
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.
The second slide is wrong no? If you use the right hand rule and follow the arrow it goes the opposite direction.
@@mainframeomega3154 Nah, it’s right. maybe it’s a perspective issue, some people see the arrow going the other way.
so helpful! Thanks so much!
I love the internet for videos like this
I think all the dB you draw for the last example have the wrong direction. But it does not affect the final answer tho.
epic video thankyou
Love u man
Upload videos gravitation, mechanical properties of solids , mechanical properties of fluids.
can someone explain why the questions at @17:29 and @18:11 have different signs (adding and subtracting) of the radius a and b?? The question @18:11 is said to have both magnetic fields pointing into the screen, but with this, shouldn't @17:29 also have both facing the same direction??? if anyone even understands what im asking
hi love the video but im just wondering why at 15:19 does the pi also get canceled out ?
That was a typo. There’s a pinned comment about it. My bad.
@@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
This was Hella helpful
Thanks man!!
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.
That’s going to be a bunch of rings. Take the ring formula and integrate outward
is the electric field parallel to the current?
In the wire yes, current flows in the direction of the electric field
in which direction does force point to?
You have to use a right hand rule to find the direction of magnetic force
Amazing insights!!
Thank you for this video.
Thank you so much for this video! I love how you calm us viewers down when teaching the concepts 😅
thank you so much this is amazing
Can you do Ampere's Law for the last problem?
Thank you for your help!
I don't think so. Ampere's law would be difficult due to a lack of needed symmetry in the problem.
you are perfect!
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)
It does point toward us in the video. Maybe the perspective looked weird?
@@DavidSantoPietro you're right, it was perspective that got me. I see it now
Thank you for this video!
15:15 why does the pi disappear in the final answer?
nvm i saw another comment that addressed this :)
Great video, Thx!
Nice job.
thank you so much
Hii could you make a video on earth's magnetic field & magnetic dip angle??
It always confuses me!
Where can I get your lecture notes
Click on “more” under the video. There’s a link
what is the program used at 5:00?
Geogebra 3d
@@WeAreShowboat Thank you!
Thank you!
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The Goat
Beams!!!