You have no idea how much your videos have helped me out. I just may pass Physics 2 thanks to you. I just want you to know that I sincerely appreciate everything you do on here, seriously.
It’s 1 hour and 36 minutes until my final exam, and I just now learned that two loops doubles the i enclosed, and that’s why the B formula can be derived for a solenoid
Best youtube channel out there for detailed explanation and problems on most subjects. I gotta know what u look like after watching hundreds of hours of u in physics orgo and gen chem. can u please do a face reveal?
Oh my god, after stressing how in the world can a solenoid's magnetic field can be explained ,without just memorizing formulas, I finally understand it comprehensively
8:45 - take this a step further by calculating the force that a 0.26T magnetic field would exert on a spring to open a solenoid valve. What would be needed for this calculation?
I am familiar with vector calculus but this kind of stuff is still amazing. Solenoids are a magnific 'exploit', by bending the wire we are shaping the magnetic field to concentrate in the center.
Love you videos. Just wanted to let you know that at 2:55 the CC misspelled Magnetic in Magnetic field. I don't know if you care to fix it but just wanted to let you know
Very good. Now my question is: That 0,26 T, equals what force in Newton ? I need to project an electroiman and so, know, how it will be, in terms of N, to LIFT 1 KG ?
i think we can take any closed loop (any shape) in space as long as we sum up the B//l along it. here by taking a rectangle you can only consider the line within the solenoid coz the other 3 lines are negligible, hence the b field within the solenoids center axis
Sir: Thanks a lot for your helpful teaching. With all respect, a solenoid is a coil of wire sometimes containing a metal core. So, my question is, should the coil be always insulated from from the core? even if it doesn't have a metal core?
If the magnetic strength is always in relation to the number of turns per meter, then it seems like increasing the number of turns of wire would have no effect on the strength of the magnet. Assuming the diameter of the wire is unchanged and it can't be coiled any tighter, then increasing the number of turns will increase the length proportionally and they will cancel out. In your example, N=1,500 and l is 5cm, so n=30,000, but if N doubles to 3,000, then l will also double to 10cm and n is still 30,000 and the magnetic force doesn't change. How can this be right?
The strength of the field is to do with density. Even if the solenoid is longer, the density of the turns per coil remaining the same will lead to the same magnetic strength. Id think about how magentic strength is not related to the size of the solenoid
I did not get the I(en)= NI and you said that if one loop is 10 Amp then 2 loop 20Amp and so on........ but how? 🤔all the loops in series and same current flows in solenoid instead you increase the loops then current will decrease.
Isn’t what you calculated Mag. Flux density since it’s in Tesla? Also wouldn't you end up with Tesla/Meter as your final units? Why wouldn't you just use B=uIN, since that would give you the total Tesla within the solenoid.
SAME DUDE , JUST CHECKIN THE COMMENTS IF I HAVE THE SAME ISSUE.. AND I DONT KNOW WHY , I HAVE ALREADY CHECKED IF I HAVE CALCULATED IT WRONG BUT IT WASNT.
Final Exams and Video Playlists: www.video-tutor.net/
You have no idea how much your videos have helped me out. I just may pass Physics 2 thanks to you. I just want you to know that I sincerely appreciate everything you do on here, seriously.
For college or high school?
@@jesussaquin6266 College for sure...I should understand the level of difficulty in Physics.
Sameee
You're the best there is on TH-cam for studying. Love your videos man.
False
rip eng
It’s 1 hour and 36 minutes until my final exam, and I just now learned that two loops doubles the i enclosed, and that’s why the B formula can be derived for a solenoid
Did u pass
literally same 😭😭😭😭
Lol! Mine is exactly in 36 minutes
Daem
How was your exam its been 3 yrs
You're the best. I'm a teacher and I watch your videos to help me simplify the topic for my students.
YOU'RE AN AMAZING TEACHER AND HUMAN. I LOVE YOU.
You're the reason I don't completely fail Ochem or Physics. Thank you so much for all the videos :)
Been thinking a question for an hour, and your vid just answered my confusion in ten minutes!!!! thanks so much!!!!
I love the way he just broke everything... Good teacher indeed
broke down haha
Best youtube channel out there for detailed explanation and problems on most subjects. I gotta know what u look like after watching hundreds of hours of u in physics orgo and gen chem. can u please do a face reveal?
Thank you for how well you teach and simplify things.
I'm hours away from writing my physics test and this is super explanatory!
You helped me pass Ochem, physics, and calculus. Thank you
At the end of the video, you sell your channel like someone who has maybe 500 subs.... Then I realise you're sitting at 1.4 MILLION! Love it.
He's at 7.75 million now!
Bro.. you are genius... i learnt a lot from your physics videos... thanks... and love you
You really have a video for every single topic wtf you are AMAZING THANK YOU
Oh my god, after stressing how in the world can a solenoid's magnetic field can be explained ,without just memorizing formulas, I finally understand it comprehensively
same here
Thanks a ton bro. You make me love physics so much
This guy is actually my favorite
How about taking a circular loop inside the solenoid? How does ampere's law explains it?(since inclosed current inside is 0 but we know B is not zero)
Thank you so much! Such a life saver!
Really Helpful 😊
8:45 - take this a step further by calculating the force that a 0.26T magnetic field would exert on a spring to open a solenoid valve. What would be needed for this calculation?
Exact solution in only 10 sec. Ty bro
Excellent delivery!
Dude you deserve my tuition
Really helpful thanks man!!
my man just made me to enjoy physics.
your a life saver thank you
This channel is basically a library
so clear, nice work!
So is the magnetic field on the surface of the coil considered the same as the magnetic field inside the coil?
Thanks a lot sir. No more doubts 😊🙏
I am familiar with vector calculus but this kind of stuff is still amazing. Solenoids are a magnific 'exploit', by bending the wire we are shaping the magnetic field to concentrate in the center.
This replaces my textbook and in-class powerpoints
i am so proud of you
Who are you? and why are you so wise in the ways of science?
Love you videos. Just wanted to let you know that at 2:55 the CC misspelled Magnetic in Magnetic field. I don't know if you care to fix it but just wanted to let you know
u deserve a huge thank
well explained
Sir, you are GOD!☺️
I freaking love you and im not even kidding💖
THANK YOU!
Using the right hand rule of thumb, nice. There is even sigma notation lambda and some other neat ones, sometimes good symbol does it.
Thank you once again.
you're my hero 😍
Very good. Now my question is: That 0,26 T, equals what force in Newton ? I need to project an electroiman and so, know, how it will be, in terms of N, to LIFT 1 KG ?
How about correlation between diameter of wire, diameter of selenoid & magnetic field?
thanks.
Yes, I would love to see this as well.
Using the summation rather than the integral makes much more sense... coming from someone who's shaky on calculus still
So nice
3:20 why you used rectangle instead of circle ?
i think we can take any closed loop (any shape) in space as long as we sum up the B//l along it. here by taking a rectangle you can only consider the line within the solenoid coz the other 3 lines are negligible, hence the b field within the solenoids center axis
Sir:
Thanks a lot for your helpful teaching.
With all respect, a solenoid is a coil of wire sometimes containing a metal core. So, my question is, should the coil be always insulated from from the core? even if it doesn't have a metal core?
Have to be the best human being on the planet
Petition to change your channel name to "The Tutor"
Doesn't sound as cool
Wait.....this wasn't a bob Ross tutorial. Good job sir
very helpful. thanks
you are no 1
it just you are the best
you are the best keep going
Thank you so much
1:54 what happens to current enclosed variable(Ienc)
how did you get u0 mu 0 for the example at the end of the video
Its a constant
Oh that makes sense thanks
If the magnetic strength is always in relation to the number of turns per meter, then it seems like increasing the number of turns of wire would have no effect on the strength of the magnet. Assuming the diameter of the wire is unchanged and it can't be coiled any tighter, then increasing the number of turns will increase the length proportionally and they will cancel out. In your example, N=1,500 and l is 5cm, so n=30,000, but if N doubles to 3,000, then l will also double to 10cm and n is still 30,000 and the magnetic force doesn't change. How can this be right?
The strength of the field is to do with density. Even if the solenoid is longer, the density of the turns per coil remaining the same will lead to the same magnetic strength. Id think about how magentic strength is not related to the size of the solenoid
Thankyou
But I have question.
Is magnetic field of solenoid independent of the cross-sectional area of the solenoid?
Yes it is independent
2 hrs before I go to exam room, and seeing this is one of my CPF method🤣
I did not get the I(en)= NI and you said that if one loop is 10 Amp then 2 loop 20Amp and so on........ but how? 🤔all the loops in series and same current flows in solenoid instead you increase the loops then current will decrease.
God bless you!
Where does the 4pi x 10^-7 come from? Thanks
its just a constant
I think they do tests and measure it
Love of my life
Excelent!
Isn’t what you calculated Mag. Flux density since it’s in Tesla? Also wouldn't you end up with Tesla/Meter as your final units? Why wouldn't you just use B=uIN, since that would give you the total Tesla within the solenoid.
so what would be the formula to find amp?
if the turns is 20 turns per centimeter it is still need to convert to meters?
you just save me!!!
Mam sana ap bi aisay samjahaya karay please🙏
You can derive this formula using biot savart’s law too
I keep getting .026T not .26T isn't 10 to the minus 7= .00000001?
SAME DUDE , JUST CHECKIN THE COMMENTS IF I HAVE THE SAME ISSUE.. AND I DONT KNOW WHY , I HAVE ALREADY CHECKED IF I HAVE CALCULATED IT WRONG BUT IT WASNT.
I have physics finals after 2 days lets start the study marathon
I'm sorry but his voice is incredibly attractive. I had to say it. lol.
Why is the magnetic field that is perpendicular to a solenoid equal to zero?
why would the field outside the solenoid be zero?
i love you bro and rona gem bauzon
Here 1:30 hour from ap physics 2 exam.
So the ampere law just show us the formula for solving the strength of magnetic field ?
what a minute, how about the area of the of the solenoid
, I don't think the length is all that matters.
The solenoids diameter doesn’t matter?
GOAT
how about an electric motor
3 hours before the exam
fucking angel
I liked it but u can have better graphics
This guy sounds like the Zombs Royale youtuber Unlegandarynoob
❤
still makes no sense. Only works with infinite length wire.
I think integral calculations are required for finite length wires
Cannot understand the slurred English
I"ve watched heaps of your videos and learned a lot but PLEASE... it is maGnetic, not maNetic. That was really distracting
My illiterate bro, that's the actual pronunciation it's "manetic"
@@Reallynvmm34 I must have misunderstood. If you weren't talking about magnets, then what were you talking about
@@gavdownes100 cmon browski jus the pronunciation
You don't even explain the reason it is strong at the center. Very poorly explained
To explain it he would need to teach Faraday and Lenz's law, which would be later on in the course.
manetic field, get the pronunciation right PLEASEEEEE its pissing me off