Physics & Electromagnetism : Polarity of Electromagnets

When using electromagnets, pay attention to the fact that there is both a positive and a negative side, with electrons going from minus to plus. Determine the north and south poles of an electromagnet with help from a science teacher in this free video on electromagnets and physics.
Expert: Steve Jones
Contact: www.marlixint.com
Bio: Steve Jones is an experienced mathematics and science teacher.
Filmmaker: Paul Volniansky

[@CraigHollabaugh]

Never heard this explained soo clearly. Love the tails of the letter 'N' and 'S' following the current flow. Perfect!

[@nishashafi8246]

You literally saved my life ..thank you!!

[@naveensundar4765]

What

[@birdwatchingwithdrrajasaur4410]

This is the exact information I was looking for, thank you for the easy explanations!

[@katesmith6730]

You have saved me from failing to understand this concept! Thank You!!

[@PRAKASHxox]

Me too

[@gemma8931]

THANKS SO MUCH!!! I have a test on electromagnetic fields tomorrow and this helped me heaps

[@hollows5704]

Did you know what you have done, you just saved my life

[@MLFranklin]

Brilliant! It helps refresh what I learned in Physics about 37 years ago.

[@tarkeshwarrai2944]

shukriya

[@barakaokobba3753]

This is a brilliant explanation

[@chirayushekkar8230]

Thank you so very much.... i have an exam tomorrow and no website or video was able to explain it as good as you

[@mayanksarode]

the explaination was on point, absolutely insane. One of my friends always has problems in this subject but this video made her understand the concept on the first try. Thanks!

[@dontmessup8712]

Best video. This video had cleared my doubts. Thanks Sir.

[@DS-mt2gm]

Thank you very much sir🙂🙂

[@abhi-np1hr]

Thank you sir. Your technique is really amazing.

[@katesmith6730]

I agree

[@dileepkumarisar8137]

Thanks a lot teacher from INDIA. I can say that you are the teacher of physics.

[@lucyvarghese6617]

if it is positive terminal then that will be south and vice versa.

[@kartikgupta7553]

Thanks

[@siddharthagarwal7409]

Saved life even after 12 years of posting of video

[@nc8002]

Thank you so much sir !!

[@revathiselli4502]

Thank u very much sir
This would help me in my exams

[@SriKrishna3434]

Thank you sir 😊..lucid and simple which can never be forgotten...most best video of electromagnetism in RUclips...
You saved my marks in board exams...
For you I understood and loved electromagnetism ch

[@nishitjoshi1600]

I m so much impressed by ur way of explanation plz some more videos on magnetic interactions as well with ac and DC
Plz sir I love ur teaching

[@AdityaSingh-po8dp]

True knowledge 😊😊

[@redditrecap7]

After searching for hrs i found a perfect and accurate information!

[@nareshyadav1977]

thankyou so much sir for this great explanation

[@harshasrikara]

Whoa, finding the poles just became soooo much easier. I love this explanation.

[@omprakashsanhotra5670]

Very good explanation regarding the electromagnet pole polarity by clock method.

[@yeezus8256]

thx for your help bosman

[@inmoh7]

Excellent work sir...Now I've got it easily

[@kmarinas86]

Post 2 out of 2:
The example in the video requires that the pole being examined (whether N or S) is always pointed towards the viewer (i.e. "out of the page"). If we realize that, then we can also use a similar method to determine the magnetic field generated by a charge flowing out of the page. For example, a positive charge flowing out of the page would generate a south pole pointing clockwise on the page (see the arrowed S on the left hand side of the whiteboard in the video).

[@shilohpatten3761]

You're right. Now I'm trying to understand how Antarctica holds the north pole....

[@benbarrypoweredbyenergizer]

Dude! This is awesome!!

[@adrenaline1]

So in summary, if the wire rotating around one endpoint is CCW, then we have Northpole at that end. The other end must then be CW and therefore Southpole.

[@lakshmik4518]

Thank you sir for your wonderful explanation, it really helped me a lot for my examination.😊

[@nahasct9360]

Explained in very complicated manner....
Simply say...while following cork screw rule....if the direction of movement in one side is outward, that will be N pole, and if direction of movement is inward of magnet, that pole will be S pole....

[@unhuman537]

Nice explanation.. Thanks

[@sushilpandey9445]

Thank u for this video

[@manjulareddy6669]

It was simple, quick and informative.

[@ganeshS-rn3nd]

Thanks, this was helpful.

[@kmarinas86]

Post 1 out of 2:
Interesting use of the letters S and N!
I can see the S on the left has the arrows pointing CW, and there you can use a "left hand" rule. For the N on the right, you can use a "right hand" rule.
If you took a fresh letter S and drew a cross in the middle, you can get two arrows pointing CCW toward the center. If you took a fresh letter N and drew a cross in the middle, you can get two arrows pointing CW toward the center. This would give us the rules for negative charge.

[@bts-beattouchsoul4632]

I was really confused....thankuuuuu....it was so easy..to understand

[@Kuldeepyadav-ej8li]

thanks a lot hope you avhieve million of subscribers

[@aninditakalita1494]

It is very important for class 10

[@Wuxos31]

Question, when you say north and south pole, does that mean geographical North and Geographical south refering to the Earths polarity or opposite? Do you mean that the North end of magnet is the same polarity as Earths north, OR it would be atracted to the North?

[@amritkaur5293]

Wuxos31 of the magnet in this case...

[@SemiraKassim]

The vedio is older than me.
I like it too❤thanks ❤❤

[@disneysful]

i think this question would be hard to answer
QUESTION:- If i have two electromagnets in series connection,that is connected to the battery,then what will be the polarity for each electromagnet?

[@arkpiano13]

WELL I GOTTA SAY, wow! I watch this every time i read this chapter hahaaa

[@fairuztasnim1488]

Does that mean that the poles of solenoid depends on where I am connecting the wire to the positive point?

[@francisfilexjilangawing9694]

Sir, how to determine its pole in case coil was wrapped more than single layer?

[@razinkhan5592]

Question : which power supply you used AC or DC?

[@sukethks8166]

Razin khan he has used dc.the polarities constantly change in ac because the terminals keep changing constantly.we can say that he has used dc or he has showed polarity of an electromagnet with ac at an instance

[@noahauman]

beautifully simple. thank you.

[@techmaster90]

If the wire is coiled back and forth on in the same area how would that effect the polarity?

[@katesmith6730]

This helped lots!

[@shinysameedanazir2931]

Just amazing creature! Thanks 🙏

[@visitrajeshsethi]

Thank you Sir

[@eclipsee-20]

Thank u sir 🙏🙏🙏lots of love from India 🇮🇳

[@pujankc9284]

Thank you sir for your wonderful Explanation

[@fila650]

Sir you're awesome 😎

[@vanshikaatrevadia2093]

Great explanation!!!!

[@nifacardozo3984]

Thank you sir so much🙏🙏🙏🙏

[@Lonleyafhelpmeah]

Thanks!

[@talongrayson]

What if the + and - are in the same places, but the wire is wound in the opposite direction? So, instead of behind/in front/repeat, it's in front/behind/repeat?

[@someniceguyon]

Not sure how likely im gonna get an answer on an12yr old video but here it goes. This north, south clockwise counterclockwise is easy enough to understand… but what happens if you flip the leads to the battery?

[@MuhammadBilal-lh6xk]

Thanks

[@donjuice1132]

What if my coil starts from the front then wraps around the back unlike in the video?

[@nishashafi8246]

Then the poles would be the opposite

[@incorectulpolitic]

Hi,
What does it mean when one says that 'the body is polar and that when the body loses one of its poles, then, death fast approaches'.
What is a 'pole' and how does one lose it? I mean what is lost?
Like a magnet losses one of its poles, what is actually lost exactly?

[@BushLieWorldDie]

Will 2 electromagnets attract eachother even if the same wire is used to continue winding a second coil?`Is there any differences in their magnetism compared to standard magnets?

[@thunderbolt2576]

Thank you so much sir, you have my respect!

[@vrindashaan653]

Thankuh for the information..

[@ramnathnishad]

Love from india here

[@antonsandaruwan2461]

Helpful

[@TT-gw5jp]

there is a mistake - with this cuonter clocwise winding there is N + and S -. Everybody can test it, i just tested it.

[@manishashinde723]

thnkx u helped me alot!

[@Johny40Se7en]

Lovely explanation, cheers.
1:57 "Then we have found, a North Pole" Aye, but is there any penguins there? I'll show myself out 😅😆😝

[@craigwilson8255]

So the start of the winding is positive if you wrap say 1,000 layers back and forth?

[@150205able]

best vid ever

[@aieshamukharjee2465]

Thanku

[@ArcanePath360]

Does it make any difference though? I ask because I bought two electromagnets from ebay and there weren't polarity marked, just two blue wires. I've wired them up to the same 12V battery, both get very warm but one gets really hot. I measured the voltage draw and one draws about 0.7V more than the other one. After being on for 30 minutes it's too hot to touch.

[@mrnexport7582]

Hello Sir, I wanted to ask that can we change the poles of an electromagnet by changing the flow of Minus & Positive of a battery. Like if an electromagnet's South pole is at left and the North pole is at right so what if we change the flow of negative & positive battery electricity making the minus in right and positive in left

[@raghavchandak788]

Exceptionally common video

[@h7opolo]

0:43 whoa he just made me realize that the symbols for the opposite poles are essentially the same shape but rotated 90 degrees and flipped. interesting...

[@morgansanders815]

Actually the coil of an electromagnet is turned on a piece of soft iron not cardboard.That would make it a solenoid.

[@kellyhansen3912]

So all you have to do is turn the battery around to make it push instead of pull??

[@itzvihaan6734]

Pretty much

[@StudyTimeIndia]

Very helpful sir😊

[@shrutiagarwal4312]

👍🏻👍🏻

[@moazmohammed9381]

Thank u so much

[@hmyasirr]

Thanks for

[@thobis__4595]

powlichu sare

[@rogerhornsby8180]

Hello I am having trouble getting my DC motor to spin. I believe my problem might be that I am using a magnetic steel to wrap my copper with. I am not able to distinguish a north and South Pole as both sides seem to be attracted to the magnet. Would you have any explanation for this?

[@rogerhornsby8180]

Thank you!

[@flyingsaucers5094]

simple and easy, but not everybody knows.

[@Alpha_10206]

Thanks
You made this concept easy for me

[@Hulululululululululululu]

Mwahhhh...what an explanation ❤

[@vikshaaravinth2358]

Can u please tell me where I should use Fleming’s left hand rule and right hand rule??

[@Inferno-ob9td]

Viksha Aravinth
Flemmings left hand rule is used for the motor effect.
Right hand rule is generator effect.

[@Babitasciencetutorial]

wow ☺ nice video

[@ArifFahmiChannel]

W O W ..... Thanks😁

[@ravinderrao54]

Nyc

[@user-fi2gl3cj4h]

Minister Bruse Lee

[@nicholas4828]

Right hand grip rule is much easier. Try searching that if this made no sense.

[@sannie104]

I still can't understand. Ig I am rly dumb 💀

[@revathiselli4502]

U must have some reading brotha

[@manojmurphy5957]

how to make to north poles

[@Inferno-ob9td]

Manoj Murphy It really depends, however we can control the polarities by switching current

[@JoelJohn755]

Perfecto

[@hhibben]

It was you colonel mustard wasn't it? HOW COULD YOU?!

[@katesmith6730]

what?!