Magnetic Fields, Flux Density & Motor Effect - GCSE & A-level Physics (full version)

Рет қаралды 381,411

Күн бұрын

scienceshorts.net Please don't forget to leave a like if you found this helpful!
--------------------------------------------------------
00:00 Magnetic field lines
04:51 Magnetic flux & flux density (field strength)
07:00 Field around current in wire
08:17 Motor effect, F=BIL, Fleming's left hand rule
15:04 Experiment -
----------------------------------------------------------------------
I don't charge anyone to watch my videos, so please donate if you can to keep me going! bit.ly/scienceshortsdonate

Пікірлер: 289

@kyliek.9481 4 жыл бұрын

8:01- RH rule 8:40- motor effect 9:36- LH rule 😂 13:20- fred=bil (the force a wire feels when it is in a magnetic field) 14:01- using the LH rule 16:00- experiment: use electron balance to measure effect of length and current on force Ps. Don’t delete this comment, I marked the times for easy reference so I can study fast 😄. Thanks for the video

@mohamedosmanibrahim1736 6 жыл бұрын

For anyone who cant remember which finger represents what for the left hand rule, use FBI so first finger force second finger magnetic field B and last is current I

@Ashley-uz2gw 6 жыл бұрын

We got taught that too, our teacher just kept shouting "FREEZE, FBI" whilst doing the left hand rule as if it was a gun

@earlibee 6 жыл бұрын

can i safely assume that magnetic flux density is the same as magnetic field strength?

@encheng2664 5 жыл бұрын

i learnt it via FMC - first finger F stands for Father, second finger M stands for Mother, third finger C stands for Child Father Mother Child

@anhumblemessengerofthelawo3858 5 жыл бұрын

if you can't remember the left or right hand, there's really no point in trying to memorize ....

@arulgk9673 4 жыл бұрын

@@encheng2664 Nice!

@arulgk9673 4 жыл бұрын

I really want to express my heartfelt thanks to you as you've taught me what my teacher was trying to teach for 2 weeks, in just 20 minutes.

@user-yo2cv9im5w 2 жыл бұрын

Dravidana? Tamilana?

@afatsquirrel1853 2 жыл бұрын

How did a level go? 🤣

@rajaharzaai420 3 жыл бұрын

This is premium content.This channel is so underrated.

@ScienceShorts 3 жыл бұрын

Spread the word 😉

@nastya_is_slay 2 жыл бұрын

I'm usually not the best at concentrating (adhd things), but your videos got me hooked up! I've been watching non-stop for 3 hours, so easy and clear, thank you for your work!

@gyuiyt7807 5 жыл бұрын

I love you. I've been dreading this topic so much that even crash course physics couldn't help me. You've really helped me understand though. Thanks!

@arulgk9673 4 жыл бұрын

Same!

@mrvido2865 7 жыл бұрын

Science shorts, I am forever in your doubt .... the Cyclotron you explained in full details with the derivation of it , and the magnet on the balance and finding magnetic flux density and many more ... the exact same scenario Came to the AQA exam paper 2 ... I couldn't do them if it wasn't because of your help. I really hope something really good happen in your life because you have just made my hope of getting an A grade in ALEVEL physics to come alive again . Thanks a lot

@ScienceShorts 7 жыл бұрын

+Nima the leagend Nimatheleagend That's great to hear! Glad it helped :)

@HasanZobaer 6 жыл бұрын

you mean debt right? xD

@c48productions 7 жыл бұрын

Just discovered this channel really useful in-depth revision material thankyou

@hakaishinxero7944 6 жыл бұрын

Clem Edwards trttftffr

@ignatiusmudzviti5015 5 жыл бұрын

fact

@krishak8329 5 жыл бұрын

Uk and Ireland at 3:37 had me dead 😂😂

@apollocomet9590 5 жыл бұрын

I don’t have 6 fingers so does Flemings left hand rule still work for me?

@ignatiusmudzviti5015 5 жыл бұрын

you only use 5 fingers ,jezz infact there are only 3

@JohnDiggle21 5 жыл бұрын

@@ignatiusmudzviti5015 r/woooosh

@azharhaque9 5 жыл бұрын

Rip

@realchestro2986 4 жыл бұрын

Obviously a joke

@tahsinrahman1668 4 жыл бұрын

@@realchestro2986 you don't say

@valsarff6525 2 жыл бұрын

Finally someone who can teach. I've watched an unbelievable number of videos on this subject. I knew it was basic simple but our education system produces simpletons instead of teachers. Thank you thank you thank you.

@simarjeetsingh4600 5 жыл бұрын

For the flemings left hand rule, u can use the following to remember what the fingers indicate: Father: Force(thumb) Mother: Magnetic field direction(index) Child: Current(2nd finger)

@ubaidshah1910 5 жыл бұрын

Or FBI F=force B= b field I= current

@Barowiec 2 жыл бұрын

I've watched multiple other videos, but this one actually explained what is going on in detail

@talia9376 6 жыл бұрын

thank you for your videos, currently teaching myself what i missed in class due to illness

@1timoasif 7 жыл бұрын

Would totally love to see one on Electromagnetic Induction, AC Generators and Transformers! This video was super helpful! Thanks :)

@ScienceShorts 7 жыл бұрын

+Timo Next on my list after free charges!

@ryancouchman-sawyer2355 6 жыл бұрын

Well I'm glad that I found this the night before my exam!

@Mking99999 6 жыл бұрын

Hi, my teacher recently showed a nicer way to remember flemming left hand rule being that, your hand looks like a gun so you must be the FBI. Then just remember it in that order being F(Thumb) B(Index Finger) and I (middle finger). just a little easier way to remember. Great videos man keep them up, hopefully i can bag an A in physics because of you. Thanks man

@TheDerpyWerp 3 жыл бұрын

What grade did you get in a level physics in the end?

@vdabest2118 4 жыл бұрын

I just got a “Physics Online” ad on a “Science Short” video 😂😂 They should do a revision battle....

@ScienceShorts 4 жыл бұрын

Ooh, fancy! Some of us aren't flush enough to afford ads 😅

@vdabest2118 4 жыл бұрын

Science Shorts 😂😂😂 I don’t think you need ads, the video quality field strength is strong enough to attract the students. (Can’t believe you actually replied 😭)

@busyinverse4300 2 жыл бұрын

this is called the perfect lecture, made us study with 100% concentration, but even made us laugh during left hand rule:))))))

@jameslamont6640 2 жыл бұрын

an easy wat to remember what the fingers stand for with Flemings left hand rule is using F=BIL. starting with the thumb, which represents force, they are in the same order as the equation.

@gracejeon2629 2 жыл бұрын

A tip to rember the 11:06 section Which hand to use and for what MotoR has one R so it's the LHR (left hand Rule) GeneRatoR has two Rs so it's the RHR (Right hand Rule)

@annaisabanana6848 5 жыл бұрын

videos like this are gonna get me into uni. thank you!

@tomlloyd-hughes9689 2 жыл бұрын

THIS WAS SOOO HELPFUL! 100% going to share with friends, extremely helpful and simple information. Thank you!

@vdabest2118 4 жыл бұрын

Shout out to his Fleming Left Hand 👏🏻

@a.m826 2 жыл бұрын

You made it super easy to understand in a short time, thank you so much man!

@mikej397 5 жыл бұрын

Thanks a bunch! Super clear and easy to understand! Helped a lot!

@sineaddean4718 6 жыл бұрын

Thank you, really cleared things up!

@ezginingunlugu3247 4 жыл бұрын

finally found the perfect explanation, helped a lot!

@freedahrehan5419 6 жыл бұрын

You're a God send! You're videos have helped me so much! Thank you!!!

@thiccteletubby1234 2 жыл бұрын

your perspective drawings are insane!!🥵

@kingsleyhuang2549 7 жыл бұрын

such a helpful guide which actually related to OCR SPEC A (new spec)

@justineedad5158 6 жыл бұрын

These videos are way too good. forever grateful

@drnojtm2598 5 жыл бұрын

Quick way to remember what hand rule to use. Right hand rule is generating so its basically gene-right-ing. IM very late to this video but wow is it helpful - A-levels in 2 weeks and looking over last years papers i need to do a lot more work.

@arulgk9673 4 жыл бұрын

Hope it went well

@pixiedust1383 4 жыл бұрын

This is awesome, I love your videos. Do you think you could do a video with key word definitions for every topic? I feel like it'll help a lot of people cause key words are a pain and difficult to remember.

@fatima-oy7gk 4 жыл бұрын

@scienceshorts yes please

@mariyashandle 3 жыл бұрын

thank you so much for your work! A-Level Physics is super hard for me and my teacher's really difficult to deal with. Your videos help a lot Much appreciated :>

@edsheeran1941 2 жыл бұрын

my physics teacher kinda sucks so i often find myself teaching the material to myself. needless to say this channel has greatly helped with that so thanks a lot

@emilybradhurst304 6 жыл бұрын

Thank you! This was very helpful 😊

@NastyNinja007 5 жыл бұрын

I spent all my time revising the first year stuff, so I have been really panicking about the second year stuff. I still don't expect that good a mark, but these videos are fantastic, and have given me a chance lol. Thanks so much 👍

@Tekspert 5 жыл бұрын

I'm with you, I've done the exact same thing 😰🤷‍♂️

@yusufjim 5 жыл бұрын

Thanks for the informative video - I was wondering if you've made any videos which refer to hall probes (part of magnetic fields/flux)

@HT-lr1rs 6 жыл бұрын

I'm not even A level just puzzled by magnets u really helped simplify

@floralynphea3400 7 жыл бұрын

Thank you so much!! I finally understand it! Thank you sir

@eliazkhosty2255 5 жыл бұрын

I learned so much from your video😁. Thanks man

@ignatiusmudzviti5015 5 жыл бұрын

your channel is lit man thanks for everything

@fab4fan173 3 жыл бұрын

Brilliant explanation. Thank you!!

@Samld1200 Жыл бұрын

I like the drawing of the globe at 3:20. Got all the important bits

@bclaytz 3 жыл бұрын

You are such a legend, thank you so much!

@lmathews5608 2 жыл бұрын

☺love that 3D hand drawing, very insightful lecture🔥👍

@John-ti8bf 6 жыл бұрын

Fantastic review clips

@mydabashir6581 3 жыл бұрын

THANK YOU SO MUCH! THIS IS REALLY HELPFUL

@nishadylan 7 жыл бұрын

The best physics channel.

@ScienceShorts 7 жыл бұрын

+Dylan Vadher Cheers!

@mohamedosmanibrahim1736 6 жыл бұрын

Hi Science shorts great vid as always, my question is at 16:45. why is the force acting on the wire upwards if you want a downwards force on the scale to get a reading? thanks :)

@ThePaperCreater 6 жыл бұрын

Newton's 3rd law I think

@chowkins508 5 жыл бұрын

These videos are so helpful !

@bon.is.studying1187 3 жыл бұрын

Thank you for this awesome video! 😊

@user-lx5lo1vc7t 5 жыл бұрын

Thank u soooo much!! Please can u do a video on vector diagrams and calculating magnitude/direction for GCSE

@joelkingston6629 6 жыл бұрын

simple and good explanation

@mevinimunaweera9841 Жыл бұрын

Thank you so much😊Great explanation and memorizing methods are also easy👍

@brianfinnegan9700 5 жыл бұрын

Incredibly useful video, thank u Sir

@sameerhussain3562 4 жыл бұрын

You're so underrated.

@barisstudio1522 3 жыл бұрын

Thank you very much, this was really helpful!

@sea69420 2 жыл бұрын

A good way to remember Earth's magnetism: A compass that points North is pointing to the North Geographic Pole but since North is attracted to South, the North Pointer is actually pointing to the Magnetic South Pole

@AbelMinar Жыл бұрын

THANK YOU, THIS HELPED ME ALOT. I have always been confused on this topic and I really needed to understand this as I am going for A*. Will be visiting this channel again for sure after my UCAS, hope I get into University of Manchester :D

@itsjanna1682 7 ай бұрын

Another way to remember the Left Hand Rule is by remembering it as (Thumb) Father - Force (Index finger) Mother - Magnetic Field (Middle finger) Child - Current

@imogen9137 5 жыл бұрын

Really helpful thank you!! 😆

@ananyamalasane8073 3 жыл бұрын

The video was great!! In detail as well ... I had a doubt: In the example, we need to think in a way that the wire will experience an upward force and instead the magnets will be pushed down as the wire is fixed. Why do we not consider the force to be moving downwards itself ? Thank you.

@angelinoz5159 3 жыл бұрын

This is a great explanation, as always. I do want to ask you that what effect is exerted on a compass needle owing to its proximity to a current carrying wire? Please guide.

@seshachary5580 Жыл бұрын

very educative. Thank you Regards

@alpha.m5483 6 жыл бұрын

Sir, is it true that a constant e.m.f is being induced in an electric circuit simply due to the fact that there is a constant change in flux linkage( the magnetic fields of the electrons are interacting with the magnetic field of the coil of wire).

@musfirahniyas621 2 жыл бұрын

Helped me alot. Thankyou keep doing this grt work

@hrperformance 5 жыл бұрын

Is there a finite amount of field lines around a magnet?

@seasnek7024 5 жыл бұрын

I remember the rule as my right-hand fingers (out-stretched) as the Magnetic Field B, my thumb as the Direction of Current, and my palm as the Force as if you'd slap something.

@harrycalvert6468 5 жыл бұрын

This was super helpful but I just couldn’t stop laughing when I looked at the hand you drew for Flemings left hand rule

@ScienceShorts 5 жыл бұрын

WHY DOES EVERYONE HATE MY HAAAAND :'(

@oshinalagiyawanna24 4 жыл бұрын

Bruh you are so good! Life saver!!!!

@vibertmingo9997 3 жыл бұрын

This is really good

@yuewensun8753 2 жыл бұрын

This is really helpful. Thanks you

@trompbakker9545 2 жыл бұрын

This was really easy explained. 🙏

@braxma12 6 жыл бұрын

why is my starting current increases in the circuit, if I used bigger stronger field magnets for DC motor (stator)? Have exam on Wednesday here...

@realchestro2986 4 жыл бұрын

I'll be writing this in 8 hrs time, I'm now in a better position so thank you.

@younedward 7 жыл бұрын

Thank you for the nice explanation! But I think I prefer to think right hand rule for the direction of the force. We can keep our thumb as the direction of the current (as in the original right hand rule), then point with index finger towards the direction of the magnetic field, which leads your palm to face the direction of the force :D

@ScienceShorts 7 жыл бұрын

+younedward 0_o

@cinnamontoastfuckisthis 2 жыл бұрын

You’re a life saver

@owaismazhar9990 3 жыл бұрын

Great lecture

@Rahul-oj9kq 2 жыл бұрын

Ampère, was inspired by Hans Christian Ørsted, and came up with right-hand screw rule, coffee-mug rule or the corkscrew-rule. Orsted discovered deflecting compass in 1820, electromagnet discovered in 1825 by Sturgen, 1831 first dynamo by Faraday, 1832 DC motor by Sturgen, In 1823 Ampère's originally derived the rule, this was when he was studying effects of current directions between two conductors.

@carolines2232 5 жыл бұрын

Thank you so much!!!

@emmacole2296 3 жыл бұрын

In the practical why do you want the force to go up rather than down?

@8mycereal 4 жыл бұрын

THANKSSSS it was very fun and educATIONAL a starrrr coming SOON

@ellenhunt9272 5 жыл бұрын

in the magnets on a top man balance example, if the force was acting downwards, would the top pan balance read -ve or +ve

@wakilahmed7211 Жыл бұрын

Many many Thank you sir.. I have caught all the concept from this video.. Take love❤️🇧🇩

@pingu8394 2 жыл бұрын

S-sir, this is a brilliant and concise video and I truly appreciate it... ...However, that six-fingered "hand" at 9:36 IS GIVING ME A LAUGHING SEIZURE 💀💀💀

@ScienceShorts 2 жыл бұрын

😤

@IGCSEPro 2 жыл бұрын

Jazakallah Khair

@nancykaguima Жыл бұрын

for flemings rule my teacher told us to use "father, mother child". from the thumb to middle finger. father being force, mother being magnetic field, and child being current

@emaanfatima8118 3 ай бұрын

wow good

@hrperformance 5 жыл бұрын

Why is it that the magnetic flux density is so high (in the example @ 18:21) when the numbers you plugged in seemed so benign? Can I create this flux density at home?

@TheGhimiy1 5 жыл бұрын

thanks a lot .. very helpful

@Fortnitebawls8 5 ай бұрын

Hello, at 17:07 do the forces follow Newton’s third law. As you stated equal?

@shahadamjad3691 Жыл бұрын

thank you for the helpful content ! i truly appreciate your work

@altacademyorg Жыл бұрын

If you still need help with A Level Physics, you should check out Alt Academy, we have a TON of resources, including video lessons, revision guides, 24/7 academic support, handwritten past paper solutions with explanations on each step, and we even have our instructors sit live every night and solve a timed past paper, explaining why they're taking each step.