How to Make an Electromagnet | Science Project
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7 жыл бұрынThis video shows you how to make an electromagnet using magnet wire, a ferromagnetic core, and a battery. To view directions for a science project that uses electromagnets, see the "The Strength of an Electromagnet" Project Idea at Science Buddies: www.sciencebuddies.org/science...
Electromagnet kit: www.homesciencetools.com/prod...
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Science Buddies also hosts a library of over 1,100 other free science fair "Project Ideas" for K-12 students, in a wide variety of topic areas from Astronomy to Zoology! Visit us at www.sciencebuddies.org?from=KZfaq to see more Project Ideas for hands-on science and engineering.
#magnetism #electromagnet #sciencebuddies
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@Science.Buddies Жыл бұрын
A kit with all the parts you need for this project is available here! www.homesciencetools.com/product/make-an-electromagnet-kit/?aff=SB1
@rangiroa100 2 ай бұрын
Hi Science.Buddies. I have three questions. 1) If you take that same iron bolt with the same copper wire and with equal number of copper wire turn, but the battery is 12 volt instead of 3.7 Volt, then would the electromagnet be stronger and if so then how much stronger? 2) When creating an electromagnet, what is the maximum voltage should be use to make the magnet stronger and at the same time utilizing less current (The magnet is more energy efficient) ? 3) If you use a Neodymium (rare earth) magnet and wrap a coil around it like you did and you use a 3.7 Volt lithium battery, then would the magnet be stronger or would it remain the same?
@jcook3470 Жыл бұрын
Excellent video, thank you!
@welayinthorns747 5 жыл бұрын
Thank you so much this helped a lot on my project!! You explained it very well and the process was very easy to see and clear to understand! You've got a new sub well done.
@Science.Buddies 5 жыл бұрын
Thanks!
@lostinlowes2081 4 жыл бұрын
this made it SOO much easier to do science fair!!
@vt7477 2 ай бұрын
thanks it helped me make a science fair project :)
@joeyburrprodz Ай бұрын
same😂
@GS_studioofficial Жыл бұрын
Thank u for helping to make this! I already know but? U can use this to make a light using metal
@meridethuhing2841 5 жыл бұрын
I'm using this for my science fair project.
@philstat100 7 жыл бұрын
Thank You for the great video and information. I have three questions for You. Does this electromagnet have a North and South pole? Example: The Part of the bolt that You started winding at is North or South? How could I make one that would have a hundred pound pull? Also How would I make ir so there is no over heating? All three of these are important to me. Again Thank You.
@xRyann_ 6 жыл бұрын
The north pole of the electromagnet is where the current flows out of the battery and the the south is the end where current flows to the battery. To make one which is a 100 pound pull, just increase the number of rotations of the wire around the metal and simply just increase the voltage by using a more powerful battery.
@iraishita3933 Жыл бұрын
Hey so like i need some help with my project...your video is very informative and i watched it for my project...it's deadline is day after tomorrow and am afraid it's not working....am using 9v battery and nails of likely 5 cm...pls suggest me i very worried for this project as usually most of your projects works perfectly but this time I need suggestion....pls suggest as early as possible
@Science.Buddies Жыл бұрын
Hi - if you have specific questions about your project, you can ask in our Ask an Expert forums: www.sciencebuddies.org/science-fair-projects/ask-an-expert-intro
@Johny40Se7en Жыл бұрын
How would you do it if you wanted to make the magnet repel instead of attract?
@Science.Buddies Жыл бұрын
Hi - to reverse the polarity of an electromagnet, you just need to reverse the direction of electrical current flowing through that. You can do that by switching which wires are connected to the + and - battery terminals. However, note that this will only switch which pole of a *permanent* magnet (e.g. a bar magnet with N and S ends) is attracted to which end of your electromagnet. Paperclips are ferromganetic, meaning they can be temporarily magnetized by a nearby magnetic field, but they are not permanent magnets and do not have a permanent north and south pole. So you cannot make an electromagnet repel paper clips - they will always be magnetized by the electromagnet's field and then attracted to it. Hope that makes sense - if not, we have two other videos on our channel you may find helpful: kzfaq.info/get/bejne/jJN3qNZe1q-4Z2g.html and kzfaq.info/get/bejne/md51f9R_nN3Og2Q.html
@Johny40Se7en Жыл бұрын
@@Science.Buddies Ah I see, thank you. I have a hollow iron ball here that I'd like to make levitate / suspend, but I think it's just like the paper clips you described. It's just ferromagnetic. So I'm not sure how I'd go about doing it. I'll check out your other videos though, cheers.
@w1111-vs3dd 3 ай бұрын
@@Johny40Se7enmagnetize it
@geovannioliveiracarvalho8040 Жыл бұрын
Please, what was the voltage applied in the experiment? And what is the millimeter of the wire? I'm in doubt
@Science.Buddies Жыл бұрын
Please see the link to the written instructions in the video description for more information.
@sparkfishes 8 ай бұрын
The voltage was 6 V
@ricardoniestroj5842 4 жыл бұрын
What wire thickness do i need at 3 Volts? Or can i use 36 V (does Ampere matter?)
@Science.Buddies 4 жыл бұрын
Hi - the relationship between volts and amperes is determined by Ohm's Law, Voltage = Current * Resistance. The resistance is determined by the thickness and length of the wire. You do not "need" a specific thickness, but we typically use approximately 28 gauge wire because it is easy to coil. Be careful using higher voltages, as your wire may get hot to the touch.
@kylemilford8758 Жыл бұрын
This is essentially a short circuit, I never understand how the wires don't melt. Is it simply because of the magnet field generated? Or something special in the tiny copper wire itself
@Science.Buddies Жыл бұрын
The wires do get pretty hot to the touch if you leave this connected for too long. Since there are so many coils, the wire itself is very long, meaning the resistance is higher than if you just took a single short piece of wire and bridged the two battery terminals (in which case you're correct, wire this thin will probably just burn out).
@uriahmartin-velez9267 5 жыл бұрын
Would bolts made of different metals affect the strength of the electromagnet?
@Science.Buddies 5 жыл бұрын
That's a great question for a science project - we don't want to give it away!
@uriahmartin-velez9267 5 жыл бұрын
Science Buddies ok thank you
@Science.Buddies 5 жыл бұрын
@@uriahmartin-velez9267 if you don't want to actually do an experiment, the background section of this project might provide some useful info though: www.sciencebuddies.org/science-fair-projects/project-ideas/Elec_p035/electricity-electronics/strength-of-an-electromagnet#background
@uriahmartin-velez9267 5 жыл бұрын
Science Buddies thank you, for my project this was very helpful
@Mr_Valentin. 2 жыл бұрын
Does the wire need to be made of copper?
@Science.Buddies 2 жыл бұрын
Other types of wire should work as long as they're insulated.
@CentralProcessingUnitCore Жыл бұрын
@@Science.Buddies what do i do if its already non insulated??
@VishrutAnand29 Жыл бұрын
@@Science.Buddies best is silver, then copper, and then aluminium I have read.. that right?
@nafisafakhar5352 Жыл бұрын
What is the battery called? 😮 I need to do this for my science fair
@Science.Buddies Жыл бұрын
The battery is called a 6 volt lantern battery. If you pause the video at the beginning you can read the text on the battery. It is included in our strength of an electromagnet kit: www.homesciencetools.com/product/make-an-electromagnet-kit/?aff=SB1
@w1111-vs3dd 3 ай бұрын
@@Science.BuddiesI know this video is 7 years old, but here are some things that would greatly improve the strength of the electromagnet: - Use multiple layers (Once you want to do a new layer, move the wire to the back and wind to the top again - Use higher current batteries (Such as 9V, 18650, or a series-parallel arrangement of any battery) - Use a more ferromagnetic material, such as a soft iron core for high magnetism, coated in nickel to prevent oxidizing) - Use a disc shape instead of a cylinder shape (Extra length in an electromagnet does not give much extra strength, making it shorter is more efficient)
@isabellefrank921 5 жыл бұрын
hi there's a question in my science homework about this and i really need the answer "how is this investigation reliable?"
@kadirunaloglu523 5 жыл бұрын
it's repeateble, every step is shown in a detailed way, and it backs up existing knowledge. That's how it's reliable.
@isabellefrank921 5 жыл бұрын
@@kadirunaloglu523 that would've helped for my homework 2 months ago :)
@Sascha5863 4 жыл бұрын
How do i make it repulse the clips instead of attracting them ?
@Science.Buddies 4 жыл бұрын
Hi Sanscha - the electromagnet will always attract the paper clips. You can learn more in our magnetism tutorial: www.sciencebuddies.org/science-fair-projects/references/electricity-magnetism-electromagnetism-tutorial#magnetism?from=KZfaq
@flaviorino7075 24 күн бұрын
not possible, (electro)magnets can atract or repulse each other, depending on the polarity, but they will always attract not magnetic ferrous material
@shahchintan8920 5 жыл бұрын
Guys for this to work you have to attach it with the battery and let it warm up. Don't expect instant results. Also make sure you're not giving it too much voltage, i tried with 9v and didnt work. But with 1.5, 3 and 4.5 volts it worked.
@Science.Buddies 5 жыл бұрын
Electrical current should start flowing immediately, so you should not need to wait for the electromagnet to "warm up" to start working. One of the big advantages of electromagnets is that they can be turned on and off very quickly.
@shahchintan8920 5 жыл бұрын
@@Science.Buddies yes but when i did it the very first time i had to wait a while. Afterwards it was unstant
@Science.Buddies 5 жыл бұрын
@@shahchintan8920 Interesting. The only thing I could think of that might cause that is maybe initially you didn't sand all of the insulation off, and as the wire heated up the remaining insulation burned off. Or there could have been a loose connection with the alligator clips that got bumped. Glad you got it working though!
@shahchintan8920 5 жыл бұрын
@@Science.Buddies great video and I appreciate the quick replies, shows that your dedicated. Keep up the good work👌👌👍👍
@Science.Buddies 5 жыл бұрын
@@shahchintan8920 Thanks!
@akongas 7 ай бұрын
What’s the purpose of counting the coils? Just learning 😊
@Science.Buddies 7 ай бұрын
Please see the link in the description for written instructions on our website with more explanation of the science behind it!
@akongas 7 ай бұрын
@@Science.Buddies thank you! Will do! Have a great Xmas!
@blackhole8284 10 ай бұрын
Does this not short circut the battery?
@Science.Buddies 10 ай бұрын
This does effectively short circuit the battery and can cause the wire to get hot, so we don't recommend leaving it connected for a long period of time.
@markjoncosep2671 Жыл бұрын
What is the size of magnetic wire
@Science.Buddies Жыл бұрын
The wire in our kit is either 28AWG or 30AWG depending on availability.
@babukartik6124 Жыл бұрын
Whether clockwise or anti clockwise?
@Science.Buddies Жыл бұрын
Hi - the electromagnet will work whether you wind the coils clockwise or counterclockwise. Doing so will reverse the north/south polarity of the magnetic field, but it will still attract ferromagnetic materials like paper clips.
@jameselliott9397 6 жыл бұрын
What gauge wire?
@draculadrediter5928 5 жыл бұрын
What happens when u use more copper wire?
@Science.Buddies 5 жыл бұрын
That's a great question for a science project! We don't want to give the answer away here - see this page on our site for more information www.sciencebuddies.org/science-fair-projects/project-ideas/Elec_p035/electricity-electronics/strength-of-an-electromagnet?from=KZfaq#background
@sdgang8837 Жыл бұрын
Can I do this with aa batteries?
@Science.Buddies Жыл бұрын
This is actually a great topic for a science project! Instead of changing the number of coils, keep that constant, and change the number of batteries. You can combine AA batteries in series to increase the total voltage, and find out how this affects the strength of the electromagnet.
@w1111-vs3dd 3 ай бұрын
@@Science.BuddiesI tested this on my electromagnet, it seems that current matters a lot more than voltage, but higher voltage will transfer more current, so voltage increases the strength still.
@levimarek6432 7 ай бұрын
The reason everyone's household scissors are dull.
@asjadali1775 Жыл бұрын
This is very urgent!! I can't afford a 6 volt battery cause it is expensive where I live, can I use a normal 9 volt battery???
@Science.Buddies Жыл бұрын
You can use a 9 volt battery but the wires may get hot faster due to the higher voltage. You can make the coils longer to help compensate for this, and only test the electromagnet for short periods of time before disconnecting the battery.
@DeezFunny12 7 ай бұрын
Where are the bolts from? I just need the bolts I have everything else.
@Science.Buddies 7 ай бұрын
You should be able to get the bolts at a hardware store.
@CentralProcessingUnitCore Жыл бұрын
wouldnt this make a short circuit tho???
@Science.Buddies Жыл бұрын
There is some extra resistance since the coils of wire are so long, but they can still get hot and drain the battery quickly, which is why we recommend only running the electromagnets for short intervals.
@CentralProcessingUnitCore Жыл бұрын
@@Science.Buddies by this logic, changing the input from dc to ac would theoretically make a transformer right?
@thekillerdog5228 Жыл бұрын
This is also an induction heater ;) oh correct me if I'm wrong but could I use two transistors to build an op amp into a little circuit etc like how wireless phone chargers work but rather then being a short circuit it would be a better electromagnet? Or am I just way of lol thanks
@kookie12-bb6zt 9 ай бұрын
is any kind of battery okay
@Science.Buddies 9 ай бұрын
You can try this with most common battery types (AA, 9V, 6V lantern battery, etc) - just don't try it with something large like a car battery.
@kookie12-bb6zt 9 ай бұрын
@@Science.Buddies thank you so much
@ILoveThisLadySheDidntWriteThis 4 ай бұрын
I must be having some sort of Mandela effect moment cause I could’ve swore that the way direction in which you coiled the wire actually was important
@Science.Buddies 4 ай бұрын
The direction in which you coil the wire WILL determine the polarity of the electromagnet - which end is the north pole and which end is the south pole. This "matters" when it comes to which pole of another permanent magnet you will attract. However, it doesn't matter when picking up ferromagnetic but not-permanently-magnetized materials like paper clips, because they will be temporarily magnetized and attracted to either pole of the magnet. Hope that makes sense!
@w1111-vs3dd 3 ай бұрын
@@Science.BuddiesIf your electromagnet isn't pure iron, magnetism will remain inside of it, so your electromagnet is a weak permanent magnet too.
@BekhruzSaatovStudent 3 ай бұрын
guys who can write the method?
@oscarmegregor1291 Ай бұрын
It doesnt work. Someone please help
@Science.Buddies Ай бұрын
If you are a K-12 student doing a science project, you can ask for help in the Ask an Expert forums on our website, www.sciencebuddies.org.
@aaaaaiatoyomartelaaa1011 5 жыл бұрын
hi I like cheese
@dena5498 6 жыл бұрын
Interesting magnet here to kzfaq.info/get/bejne/qZNlebB337m0iYk.html
@memethepenguin5011 7 жыл бұрын
trying to make it seem easy huh
@Ulfie_ 7 жыл бұрын
MadZ it is easy?
@BringCashBuyChronic 6 жыл бұрын
Haha so some kids is going to wrap some speaker wire around a bolt and hook it to a 12v now everyone looks stupid
@jerrylun1689 5 жыл бұрын
no they don't. you fool
@AttologTV 6 ай бұрын
None of this works i hate this freaking experiment
@Science.Buddies 6 ай бұрын
If you're a K-12 student, you can ask for help in the Ask an Expert forums on our website: www.sciencebuddies.org/science-fair-projects/ask-an-expert-intro
@Dicko 5 жыл бұрын
Don’t make the same mistake I did and buy insulated copper wire so the electricity won’t escape and will run through
@thekillerdog5228 Жыл бұрын
Both enamelled and magnetic wire is the same for others out there but what I'm guessing you are referring too is standard speaker wire type stuff haha
@OKFrax-ys2op 9 ай бұрын
🤣
@salmanaziz4151 7 жыл бұрын
is it OK if I have .2 copper wire
@sanatauddy870 7 жыл бұрын
Which wire u using
@lovelykumari7442 7 жыл бұрын
what should be the thickness of copper wire?
@SamiJumppanen 7 жыл бұрын
Lovely Kumari it depends on the resistance, size and power of the magnet you want. Low resistance draws more current and it depends on the battery if it can give the current needed. It's basically logical, but I don't know yet how to really decide on the wire thickness, voltage etc.
@SamiJumppanen 7 жыл бұрын
Lovely Kumari thin wire has higher resistance, thus shorter length of it limits the current easily. Using thicker wire you quickly end up with too big coil and still don't limit the current enough for the battery.
@Nikisha_Nicol2024 4 жыл бұрын
The battery that y’all sent me looks different than one in video does that matter ?
@Science.Buddies 4 жыл бұрын
No, it should still be the same type of battery, just a different brand. It should still work just fine!
@gilbertorrr1 5 жыл бұрын
good stuff
@brandonnorris1026 5 жыл бұрын
He doesn't even specify lacquered wire or insulated or none. Someone's going to hook this to a car battery and melt some shit
@rehamshouman8402 6 жыл бұрын
The battarey volt??
@Science.Buddies 6 жыл бұрын
The battery in this video is 6 volts.
@Friedrich-Wilhelm-1980 6 жыл бұрын
can you make a motor using only electromagnets?
@willtheoct 5 жыл бұрын
Yes! that's how electric motors work, actually! They alternate 2 or more electromagnets very quickly to produce angular momentum.
@goatcheesewheel12345 5 жыл бұрын
It didn’t work for me
@Science.Buddies 5 жыл бұрын
If you are having trouble building an electromagnet, you can ask for help in the Ask an Expert forums on our site: www.sciencebuddies.org/science-fair-projects/ask-an-expert-intro?from=KZfaq
@yoremkastor 7 жыл бұрын
mm?
@curtiswilliams7638 4 жыл бұрын
I was going to take this idea and build it on my hammer so I can easily set nails or pick them up with ease anyone think it will work?
@Science.Buddies 4 жыл бұрын
Hi Curtis - that might work in the short run, but repeated pounding from the hammer might cause it to break. You'd also want an easy on/off switch to make sure it doesn't overheat from staying on too long.
@curtiswilliams7638 4 жыл бұрын
@@Science.Buddies I thought os the kill switch obviously lol can't have a hammer magnetic 100% of the time only, but I never thought it would get weaker, how?
@afjaliansari5627 4 жыл бұрын
Curtis Williams
@dimtrijelazic8227 7 жыл бұрын
You are gay
@heatherridge6030 7 жыл бұрын
Why would you say something like that?
@tinydino9013 6 жыл бұрын
you are gay
@itsjustraden 5 жыл бұрын
what the fuck even
@johnnyd6953 5 жыл бұрын
that's gay
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