Doing a science project with electricity, a magnetic

This is ideal for showing at the fair of science and is good for students of high school.

Go to your local hardware store and use the following steps:

* A nail (you need a long nail that is at least 3 cm long.)
* The D batteries – you need 2 of these
* Thin Wire
* A wire cutter
Tape *
* Tape
* Paper clips
* A “knife” switch – you can buy one of these at Radio Shack or order a catalog to leave I think it costs about $ 3.00 ..

Here are the instructions to make the magnets:

1. Leave your thin wire hanging about 6 inches from the wire and start wrapping the wire tightly around the nail length. They do around 60 times rolling. When you are done, we are still 6 inches extra wire hanging from the tip of the nail and cut.
2. Put your two batteries miss each other and knives.
3. Take the nail wrapped with wire and ready, so that the nail head is on the left side and the point is on the right.
4. Take the excess wire hanging from the nail and get to the bottom of one of the batteries. This is the negative side of masking tape and tape it down. Be sure to touch the wire to the battery.
5. fixed Now take the excess wire to the nail head and secure with a clamp on the switch.
6. Now cut two pieces of wire about 8 inches each. The first band on the top or the battery positive wire that you attached to the nail and put the other end and secured with tape on the ground or the negative of the second battery.
7. The second piece of tape over the end or at the upper end of the second battery positive and the other end to the other terminals switch.
8. Well, if you press up close to the switch, connect the power cord and now provide electricity, through the Son and around the nail. Do not hold the nail as it has electricity through them. You can either put it on the table.

Use your clips to nail them together and see if they are magnetized. To understand what you should know that if the flow of current through the wire wound around the nail is the magnetic field. The field is expanded in the expanding circle with. If you bend the wire into a coil, it is called a magnet. Since the wire towers magnetic field, magnetic energy in the area of the wound causes remain wire wound. This is a very powerful magnet that is called an electromagnet.

When the electromagnet is generated, it causes all the fields in a direction that is compatible with a magnet and will create a North and South Poles. It is strong enough to pick up things like a small paper clip.

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