4 Simple Magnet Motors You Can Make at Home

Hey guys welcome back i’m Nate with the king of random and today We’re going to be doing a few small projects that let us take a look at the relationship between Magnets and electricity growing up. I always love playing with magnets and over the years the quality of magnets available has improved significantly These silver coloured rare earth magnets are very powerful And you can do a lot of really cool things with them the purpose of today’s video is to show you a few awesome tricks That you can do with magnets and electricity using some easily available supplies here are the materials we’re going to need for today’s projects aluminum foil some double-a and triple-a batteries Some strong rare earth magnets and you want to make sure that the diameter of the magnet is at least a little bit larger than The diameter of your triple-a battery some coated copper wire I found this in the jewelry making section at a craft store This is copper wire that has a thin layer of Enamel paint over it it can often come in several different colors some uncoated copper wire Electrical tape and a couple safety pins now the first thing that we’re going to do is extremely simple I have here a stack of these rare earth magnets and a roll of foil what I’m gonna do is I’m going to drop the magnets down through the tube to watch what happens. There’s nothing in this tube. It’s completely empty Let’s watch what happens if I just drop them without the tube They fall straight down. Nothing’s impeding them, but if I drop it through the foil It goes way slower like that’s not even half the speed it’s amazing how much slower it goes It’s not rubbing up against the size of the tube or anything like that as far as I understand it Here’s what happens when a magnet moves past metal it creates an electric field and when electricity is running through metal it creates a magnetic field so as the magnet drops through the metal the metal becomes charged with electricity and then turns into an electromagnet itself the Electromagnet that is the foil is then repelling the magnet that’s falling down through the tube so it slows it down a lot and the more powerful the magnet the more powerful the electric field the more powerful the Electromagnet and the slower it goes it’s kind of confusing But I’m going to try and turn it upside down when it’s almost at the bottom and just keep it going Yes off you Well nope nope That’s crazy magnets, let’s try the next experiment for this one We’re going to take a double-a battery and attach three of our rare earth magnets to the bottom of it Next we want to take about one foot of our bare copper wire bend your wire in half and use a pair of pliers To pinch where it’s bent now, let’s bend the wire into a sort of a heart shape You’ll want to touch the bent portion of your wire to the top of your battery Next we want to bend the two ends of our wire so that they will run directly across the middle of the magnets if you Have excess wire sticking out too far trim that off You’ll also want to bend your wires to make sure that the two ends are parallel to each other At this point we should be able to make a small motor by placing the wire on top of the battery so that the two Ends of the wire are in contact with the magnets the wire should begin to spin Now you can see that the wire did begin to move, but it quickly destabilized and fell off So we’re going to add a couple of curves on the bottom wires to hold it more securely onto the magnet by bending the wire Around the battery we can create a sort of groove that will line up with the magnets and hold our wire in place I’m gonna see if it worked any better with the magnets on the other side so the Little nib of copper doesn’t have to balance quite so perfectly on the tip of the battery Well now it just slipped off the other part of the battery It still made contact right there on the little edge, so it’s still I’ll finally slow down alright I keep having my little copper motor spin so fast that it falls off And I’m trying to find ways to make it stay in place so I think what I’m gonna try and do is I’m going to Try and put a tiny divot in the back of the battery that will give our little pivot point something to stay balanced in so It doesn’t fly off quite so easily I have a nail with a slightly dull head and I’m going to try and line that up with the very center of the back of the battery and Lightly tap it with a hammer to give it a nice dent I need to be careful of course that I don’t stab into the battery I don’t know exactly what that would do, but I’m sure it wouldn’t be good All right, that’s not bad, let’s try that out and see if it’s gonna work That’s working pretty well Oh my gosh And it’s spinning so fast that it’s inertia is causing the battery and magnets to rotate the other direction a little bit. That’s pretty funny There you have it seems that making a dent in the battery does a pretty good job of helping it stay centered And it doesn’t fall off as easily Now let’s make another kind of motor this one uses the same principles, but is a different design We’ll need our double-a battery a couple more magnets two small safety pins our coded wire and some electrical tape the coated wire is copper wire that has a thin layer of protective enamel on the outside of it the enamel prevents the copper from making contact with the battery so Electricity can’t flow through it unless we remove part of the enamel to start cut off about one foot of your coated copper wire Leaving about two inches at the end wrap your wire around your double-a battery several times Wrap the ends of the wire around the coil a few times to hold it all together Now we want to trim the excess wires so that they extend about one centimeter beyond the edge of our double-a battery Now that our wires trimmed we need to remove the enamel from one side of the wires Take some fine grit sandpaper and remove the enamel from one side of the wire until you can see the copper beneath it you can See the copper color that shows that the enamel has been removed from one side of the other But it’s still in place on the other side with the enamel removed from both sides of the wire our coil is ready And it’s time to assemble the rest of our motor with electrical tape attach the safety pins So they are in contact with the two ends of the battery you’ll want to be sure that the loops and the safety pins are At the same height and lined up with each other Secure your battery and pins to the table with the pins pointing straight up Attach one magnet to the battery in between the two pins Feed one wire from your copper coil through the loop in one of the pins Feed the other wire through the loop in the other pin let go of your coil and it might start moving If it doesn’t take off on its own right away give it a little nudge For the last experiment we’re gonna need a little bit more copper wire I have about 20 feet of it right here And we’re also going to need a triple-a battery And four of our rare earth magnets it can sometimes be tricky to find copper wire without any sort of coating on it The copper wire I’m using comes with a plastic coating around it I just shave that off and it gives me some nice exposed copper I’m gonna show you how I use a razor blade to quickly remove the plastic coating from this copper wire Now that I’ve removed a thin strip of the plastic from the whole wire I can easily peel it off from the rest Next we want a wooden dowel with a diameter slightly Larger than our magnets what we want to do is tightly coil all twenty feet of this copper wire around the dowel Now this seems like it’s going to take a really long time So I’m gonna try and speed it up using power tools With the dowel now securely attached to the Chuck of the drill I can now start spinning it and wrapping the wire around it evenly Remove your copper coil from the dowel and spread it out Just a little bit So there’s a tiny bit of space in between each loop if there are any spots where the gap is too large You can usually just push it back together We now have a copper coil about one foot long, so let’s take our magnets and attach them to our battery Before you attach two more magnets to the other end you need to make sure that they’re oriented correctly Facing one direction the magnets are attracted to each other and will pull themselves together But if you flip them around the magnets will repel each other in that same orientation with the magnets repelling each other attach two more magnets to the bottom of the battery At this point if you fit the battery and magnets into the copper coil something pretty fun should happen Check that out the battery and magnets pull themselves through the copper coil like a little self-driving electric train, let’s do that again Mm-hmm there goes flies right through the whole coil We Made it around the curve Okay, so what is happening as our little train goes through its little tunnel when the magnets make contact with the copper coil electricity is running through them and through the copper as We know electricity running through the metal wire turns it into a magnet because we have our magnets facing opposite directions The magnet of the coil is pulling on one side and pushing on the other running it through like a train It goes all on its own, that’s so fun I could probably just play with this thing all day So cool so many neat things you can do with magnets and electricity a quick recap a Powerful magnet drop through a tube of aluminum foil will fall very slowly because it’s movement creates an electromagnet Which slows it down this small type of motor was made by just bending a piece of copper So it touched the top of the battery and the magnets stuck to the bottom of it it had some problems Destabilizing until we flip the battery upside down and put a small divot in the bottom of it Another type of small motor can be made by running electricity through a tightly wound copper coil Rotating over a magnet a couple of magnets stuck to a battery in opposite directions will run through a copper coil like a miniature electric Train there you have it now. You know a few small simple tricks you can do with magnets and electricity at home Thank you for joining us for this project and we will see you in the next one. Talk to you then Do things with them? Next we want to get Hey guys quick reminder that king of random t-shirts are available once again Just go ahead and click the link at the top of the description and it’ll take you to where you can get one today

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100 Responses

  1. The King of Random says:

    Hey what's up Noti Squad?! Welcome to December! For planning purposes, we're posting a video every single day from now until the end of the year. ? Should be one crazy ride so hang on! ??

  2. Darshaun Evans says:

    It will explode

  3. sudarshan gond says:

    What is the scientific reason

  4. Simon Scurtu says:

    1:22 are u sure the speed difference isnt caused by friction

  5. John Chrīstopher Mīller says:

    why do we use gas and oil in vehicles again???

  6. Ilakkiya Ramya says:

    It's very useful to us

  7. William Pace says:

    When I did the thing with the heart and spinning wire that was my science fair project for fourth grade?

  8. yaybudda budda says:

    Neodinium rare earth magnets are some of the best magnets you can buy

  9. MY CHANNEL says:

    Batery dieing?

  10. Gabriella Morris says:

    2:22 make this a meme please.

  11. CHARLES JAMES says:

    Should have mentioned Faraday.

  12. Zokora von Yensloh says:

    what happens when I put the copper coil into a circel? Does the battery train just keep going?

  13. Mark Arnott says:

    8:15 ??WHY DONT you try > Make a long cooper coil & join it see if it goes around in a loop 🙂 ?=======-===-=========toot =======

  14. Quinns Treasure Trove says:

    you should make a track with the 4 motor
    the one with the battery running through the copper

  15. Rozer D Costa says:

    I suggest that u can make a whip with how the king of random showed how to make a plastic string with a botte and turning it into a plastic rope

  16. da nu says:

    thaynx bruhthr?awsuhm stuhf? ~ wiyl wahtchihng i thawt uhv lihtoh pees uhv tuub awn tawp lihtoh ehnd uhv bahteree ? buht dihviht werk greayt tuu thaynx?? ~ oh n awn spihnihng koyl wuhn skrayp kohtihng awf saym fays siyd uhv koyl n eeveh aht ihf koyahl aht 12 n 6 ohklawk skrayp awf aht 1.5 ohklawk??

  17. Halo Fan says:

    Edie currents

  18. T Collins says:

    Make a rideable copper coil train

  19. jedi foghorn says:

    Instead of using nail to hammer divet into battery. Could make a ring of hot glue around battery edge.

  20. Lashawn Green says:

    Were do you get your magnets

  21. Keith Reynolds says:

    1:36 yes, in front of a magnet, currents in the metal repels the magnet. But behind the magnet, current in the metal attract the magnet. Both work to slow the dropping magnet.

  22. Josue Rivera-Agosto says:

    How can i apply the heart one to making plastic wheels spin? For a electric toy car.

  23. Hayden BlueMtn says:

    Another way you can get the magnet to stay is putting a small indent on the positive side.

  24. Michael Sears says:

    Gravity magnetism. Gravity and or magnetism based on heat. Less temp less pull.

  25. Yikes Scary says:

    I tried making one of the motors and it nearly burned me you want to explain that?!

  26. Utsav Kumar says:

    the foil one is not workin'!!! oh wait, is it important to use ring mags??(i used balls)

  27. Ethan Symonds says:

    Try and make a loop from the springed copper wire, and put the battery with the magnets on each end in it.

  28. Harsh Kumar says:

    Hey thanks for the idea but do we need to have those magnets bigger than the batteries. And magnet should touch those copper wire for the last one

  29. MusixCheatCodes Notario says:

    Does it have to be copper wire?

  30. Janzyco Malala says:

    daming dama sa buhay peste

  31. Blaise Dando says:

    Its just heating up the wire

  32. Jasmine Hillman says:

    so if u had a super long copper coil and put the battery w magnets u could make a race car track but with magnets…awesome!

  33. carpe diem says:

    Last one, you should make full circle tunel and let magnet keep going constantly

  34. Cosmo TaB says:

    Like can someone list the link to the magnets

  35. Christopher Watkins says:

    Put a oil onthe battery

  36. Tatiana Guzmán-Phillips says:

    My friend made MAGNETS

  37. Tatiana Guzmán-Phillips says:

    FOR meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

  38. WJCTechyman says:

    This little experiment with the roll of aluminum foil is similar in demonstration to Matthias Wandel's explanation of how induction motors work, only he uses an aluminum disk and two neodymium magnets on a steel yoke.

  39. eskeetit says:

    The first experiment how to keep adults amused lmao

  40. cu Koopmeeker love says:

    I love this guy. He's cute. You can tell he's interested.

  41. Par Yono says:

    Why mustbuse battery

  42. Mine Rine Gaming says:

    9:05 try making it into a loop.

  43. Ryan Willis says:

    Now show people how to hook up a 240v outlet

  44. Sanath Desai says:

    Can you please make a huge network of of coil for miniature electric train

  45. Ramu Arigela says:

    It works keep going

  46. Ruswanth Rsr says:

    Can you explain at 8.45

  47. Darth hrongl says:

    But don't magnets only work on iron?

  48. guiller avila says:

    cool neodymium magnets try making a generator with those

  49. Swipe Kun says:

    R.I.P <3

  50. Kavin Balaji says:

    Make a loop of the copper wire so that it would make an endless magnet train!

  51. Mather Focker says:

    Almost as fun as a dispensary!

  52. Mather Focker says:

    First motor is called a homopolar motor.

  53. Kristof Plays says:

    Why u not make it circle the last one it well be loop

  54. The Greatest Trollmonger says:

    This is awesome

  55. andvil01 says:

    "Cut one cm outside the battery" The metric system is slowly taking over, one slip of the tongue at the time. Yay!

  56. Hernan Ortiz says:

    Thank you for everything…

  57. Papacow_225_ Minecraft maps says:

    You’ve made a DIY slinky

  58. gourav dutta says:

    Sir,can you pls share the link to the magnets you are using..

  59. Gumhead86 says:


  60. Lord Gaben says:

    M A G N E T S

  61. Lord Gaben says:

    Rare magnets??? Does nate mean Neodymium magnets

  62. Ashraful Islam says:


  63. James Shawn Kinsey says:

    Gonna use this experiment to introduce a unit on the Industrial Revolution in history class

  64. Wulf_Zero says:

    All the people that disliked this video are C students that don't understand how awesome science is

  65. Frederik Høyrup says:

    Uhm alu is not ferro magnetic…

  66. Benji Callaway says:

    I tried them all they are so cool I have the same magnets

  67. Benji Callaway says:

    You should make a video in how to float stuff with magnets

  68. Will Pugh says:

    That magnet tunnel Gizmo is pretty cool. I'm not certain but isn't the technology what powers the monorail at disneyland? At least pretty close.

  69. Sinio Cagasan says:

    if you put electricity on that Cooper that little train of yours gonna be more fast

  70. RICHA SINGH says:

    Amazing tricks

  71. RedGyl says:

    I want to do these! They look like so much fun, and so doable!

  72. G Willikers says:

    This is pretty random… but I don't think you're the king.

  73. Skip Frogley says:

    music by TheFatRat

  74. Ken Casunuran says:

    can the one motor with the battery and the copper wire spin while its sideways? like its stuck on a wall

  75. RIPZYEE says:

    Battery Shop + Mind Blow – Touch- saptipine game – copper Waire – Drill – Magnet ✔️
    Xxxx Use Battery Boxxxxx

  76. Burning Radiation says:

    lol he could copper tube a battery all day

  77. There is a hair on your screen. says:

    2:17 wouldnt it be funny if the magnet just disappeared and never came out?

  78. Neekie Nail'd It says:

    Where can I get the magnet from? My son need to do this for a school project.

  79. Gloworm Sparkle far says:

    love these vids <3

  80. lolex xydexe says:

    Me at 7:00 when i lose my charger and i want to watch the king of random

  81. Kiran Kumar says:

    Kids don’t punch a nail through a battery it will explode

  82. hungkong donkybong says:

    I love? king of random? keep it up kor y'all rock??

  83. Allen Dishman says:

    2:20 will now be a meme. "MAGNETS!"

  84. Steve O'Shaughnessy says:

    No, it's not confusing. When a magnetic field passes through a conductor, an electric current is induced in the conductor. This is how a generator works.

    In a similar fashion, when an electric current flows in a wire, a magnetic field is set up around the wire. Wind 50 or so turns of wire around a nail. Connect the ends of the wire to a battery and the nail will be a magnet.

    It turns out the magnetic field created by the electric current in the wire will have the opposite N-S polarity as the magnetic field that created the current in the first place. The magnet falling through the aluminum tube creates a current in the tube. This current in the tube creates a magnetic field around the tube which will oppose the magnet, slowing it down.

  85. Katie konopka says:

    I'm a crazy or did he say wrap all 20 feet around the wood and then say it's about one foot long

  86. Pizza Gamer says:

    I made a magnet toaster. HELP ME!
    Edit 1: Never mind, fixed it.
    Edit 2: Aaannnd… now it's a spinning toaster.

  87. Carnàgé gaming says:

    This can used as road transport

  88. Artic_fox 98 says:

    "I am gonna tap it " SLAM

  89. Michael Ridenhour says:

    That's great stuff you're working on that demonstrates science!

  90. phantom nova14 says:

    9:00 that's how the hyperloop works

  91. Kanwarjit Singh says:

    Why battery can someone explain principle?

  92. Carter Lutes says:

    why dont people do this on a much much larger scale?

  93. stupid person says:

    yeees using both metric and school shooting systems not confusing at all

  94. Lisa Henry says:

    For the last one, once you have the magnets and battery in the wire, try joining the ends of the wire to make a loop and try keep the battery going

  95. Gabriel Heredia says:

    Let me see you make a copper pipe spin like you did that wire on the battery ?

  96. Geffrey Chu says:

    Do a huge magnet train in a circular track

  97. Gulab Prasad says:


  98. Abir Lal Pramanik says:

    Magnet through aluminium roll slow down the magnet, because it creates eddy current. And this eddy current slow down the magnet

  99. Abcreeper says:

    Ep a Ste palena tapa teua noy

  100. Kanhu Parihari says:

    Nice Project brother

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