Ok back to the topic of discussion, working together to make an electromagnetic field is quite simple, it is quite easy to make an electromagnet in a very simple way. All you need to do is wrap the iron nail with a coil of copper wire around the iron core. If you attach a battery to a wire, an electric current will start flowing and the iron core will develop into a magnet. When the battery is removed, the electric current from the battery will be cut off and the iron core will lose its magnetism. So here are the simple steps to create a simple electromagnetic field:
- One iron nail
- Copper wire (adjust length)
- One or more D-cell batteries (the more batteries the more magnetic the effect)
Ways of making
- Some copper wire must be exposed so that the battery can make a good electrical connection.
- Wrap the wire around the nail. The smaller the distance between the turns of the wire, the more powerful the electromagnet you make.
- When you wrap the wire around the nail, make sure that you wrap or wind it in one direction. You need to do this because the direction of the magnetic field depends on the direction of the electric current being created. The movement of electric charges creates a magnetic field. If you could look at the magnetic field around a wire that had electricity flowing through it, it would look like a series of circles around the wire. If an electric current flows directly towards you, the magnetic field created by it is round around the wire in a counterclockwise direction. If the direction of the electric current is reversed, the magnetic field is reversed as well and the wire is rounded clockwise. If you wrap some wire around a nail in one direction and some wire in the other, the magnetic fields from the different chapters fight and cancel each other out, reducing the strength of your magnet.
- Attach one end of the wire to the visible terminal of the battery and the other end of the wire to the negative terminal of the battery. If all went well, your electromagnet is now working!
How to make a simple electromagnet you should be like this:
Don’t worry about which end of the wire you attach to the visible terminal of the battery and which one you attach to the negative terminal. Your magnet will work fine in reverse. What will change is the polarity of your magnet. One end of your magnet will be the north pole and the other end will be the south pole. Reversing the way the battery is connected will reverse the poles of your electromagnet.
Hints to Make Your Electromagnet Stronger
The more turns of your magnetic wire the better. The more current that passes through the wire, the better. Warning! But not too many turns of wire with a large electric current at once! As electricity passes through the wire, some of the energy is lost as heat. The more current flows through the wire, the more heat it produces. If you put double the current through the wire, the heat generated will increase by 4 times! If you tripled the current through the wire, the heat generated would increase 9 times! Try experimenting with different cores. A thicker core might make a stronger magnet. Just make sure that the material you choose can be magnetized.