 Welcome back to Kids Fun Science. My name is Ken. Today's experiment is electromagnetic train. As always, adult supervision is required. What you need for this experiment is copper wire, 18 gauge, a triple-A battery, six magnets, five eighth inch pipe, and a wire cutters. To start off this experiment I'm using an 18 gauge 25 foot copper wire with a five eighth inch electrical pipe. I drilled a hole in the pipe so I could stick the wire in which it'll hold the wire at one end. And then what you're gonna do is continue to wrap the wire around the electrical pipe as tight as you can. You can see there's some gaps right there but every once in a while I will pull up and get it flush because we want it as tight as we can with the copper wire. I wish I would have bought a hundred foot copper wire because then I could have made a circle and then my train could have went in a circle completely and I'm only gonna have a straight path for this for this experiment. But definitely if you guys go out and do this make sure you go out and get a longer copper wire and then also maybe even have a electric drill or something hooked to the pipe so it can spin it so you can get done a lot quicker even though it didn't take that long to put the copper wire on. And then the electrical pipe I just got at the hardware store same with the copper wire. So here I'm checking back I pulled it up tight you can see it's really tight here and about three-quarters of the way done and I'll check back in just a little bit. Here I'm back again I'm just about to finish up here on the the wire and then I want to show you how to get it off you want to keep it as tight as possible when pulling it off because if it gets too loose the experiment is not gonna work and so we're almost there once I get to the end of this then I'll be able to you're gonna use some wire cutters because remember the other end I woven a piece of copper at the in the pipe to be able to hold it on so it wouldn't slide off and I'm gonna cut that and then slide it off and then we'll be able to do the experiment. Alright so I'm at the end of the put the wire copper wire on to the pipe and now I need to take my wire cutters and cut the end where I drill the hole in and slid the copper and take the piece out and now it's free to slide off the end because it's not hooked into that hole right there and once I get it out then I'm able to do the experiment. I'm gonna use a triple-a battery and put the three neo magnets on each end so you put once you have your magnets on each end of the battery it just slides around right on through and goes all the way down the tracks which is pretty impressive so one thing to set it up is you need to make sure that the magnets are placed on the battery correctly so the poles are facing opposite directions so if it doesn't work make sure you switch the batteries around and then you're able to get it to work. So how does the train work? Well electricity and magnets are linked in a way that scientists don't completely understand. Each can create the other so when we wrap the copper wire into the coils and run the electric current through it it will create a magnetic field which I've done in another experiment which I'll put in the description so you can actually see how to make a magnetic field. If you rotate the permanent magnet in the opposite to the item that has been magnetized inside the coil of the copper wire you create a electrical current but in this project the magnets at the end of the battery create a bar magnet with the north and south pole remember you have to have the opposite ends otherwise it wouldn't work. When you put the train inside the coils it causes the electrical current to flow around the copper wire which creates a magnetic field in a section of the wire coils right around the train. This magnetic field has its own north and south poles which pushes the train along the track. You'll notice the train will only run in one direction so go ahead and give it a try and go the other way and it's not going to work because of the magnetic poles. It's pretty amazing science. I hope you enjoyed this video remember to click thumbs up and to subscribe as we do a new video every day. Thanks for watching!