How to make an electromagnet?

This is quite subject to even a beginner physicist. The article suggests three options for how to make an electromagnet at home. Try it, you will succeed!

In the first version, the instruction with the details of how to make the electromagnet the simplest. Prepare:

• Copper wire;
• Nuts and bolts;
• Scotch tape (better paper);
• Insulating tape;
• Well, a couple of hands with imagination.

Prepared? We collect the construction. First, the washers are put on the bolt. Next, the tape is wound (this eliminates the closure), everything is tightened with a nut. The core of the electromagnet is obtained. Now the end of the wire is fastened to the thread of the bolt. Begin gently winding the wire on the core, from the thread to the thread. After winding the first layer, we return to the first coil. Now the second coil is wound. The sequence of operations is repeated several times. Each time the winding should be done carefully, one layer after another, from turn to winding.

Approximately on the fifth layer, the number of turns decreases, but the density is preserved. In the end, we get a kind of "bulb". After winding the last layer, wind the coil with electrical tape. A simple electromagnet is ready.

How to make an electromagnet, the second option. Prepare:

• Wire enameled;
• pliers;
• Cambric;
• nail;
• Insulating tape;
• Paper;
• Plastic washers according to the diameter of the nail;
• source of power.

Bite off the sharp tip with pliers from the nail. Process this cut with a file. The butt should become even. Burn it in an oven and let it cool down. Remove the deposit. We accept isolation. We put on a nail cambric, we establish washers from two parties so that the winding does not leave behind kembrik. We tightly wind the wires onto the kembrik wire. When the first layer is ready, wrap the layer with paper and proceed to the next layer. More turns - stronger electromagnet. Do not forget to pull the wires out when the winding ends. The ends are cleaned and connected to any current source.

Option three. How to make a powerful electromagnet? Work this electromagnet, like the previous one, will be from electricity. And this means - power is regulated, i.e. It can both be added and subtracted. So, how to make an electromagnet powerful? Cooking:

• Nail (you can take any sizes, just not small);
• Copper wire (coil) of medium size in diameter;
• Switch (any that you find);
• Power Supply;
• Soldering iron;
• scissors.

Now proceed. To begin with - clarification: if there is no nail, it is quite possible to adapt the rod from iron (or something like that). The main emphasis is on the material (iron) and on the shape itself. The rod needs to be chosen long, not curve. Copper wire should be wound on it evenly, without spaces. Now about the wire. Suits, as you already understood, only copper. Where to get? From any power supply. For example, a small transformer, from a small generator. Focus on the diameter of the coil: it should not be too large. Ideally - the average size. Break (or cut) the plastic, so you can unwind the wire faster. The whole coil, most likely, will not be needed.

Next step. We take a nail (or found an analog) and wrap the wire on it (evenly). Each stitch should fit tightly to the previous one. I repeat: there should not be any gaps. Wind up in several layers (at least four). Do not break the coil accidentally when winding: disconnection will not allow the device to be constructed. Now we deduce two conductors: the beginning of the winding and the end of the winding. Both contacts are cleaned. Carefully, carefully. Copper wire, as you know, is very, very fragile. Do not damage it, otherwise you will easily break the contact. After stripping, both contacts are connected to the power supply. And you can at the same time and to the switch, if you want.

That's all. Choose an option and try. Good luck!