Introduction: The Electromagnet
An electromagnet is a temporary magnet. It is very useful since it can be put on or off when we want to.
Step 1: The Items
The things used are:
1.an iron nail
2.Plain copper wire
3.A 9V battery
That is all you need!
Step 2: Winding the Wire
Wind the wire on the nail. Each turn has to be close to the other. More the turns the more powerful the magnet. Leave a little length of wire before you start. And leave a little after you end.
Step 3: Connecting the Source
Connect one end of the battery to one end of the wire. Then the other end to the other end. You can add a switch if you want.
Step 4: The End
That's all. Use it to attract iron nails.