How to Make an Electromagnet?

You will use:
     Lantern dry cell
     Wire
     Switch
     Large Nail
     Small nails or paper clips

Do this:

1.Wind about ten turns of wire around large nails.

2.Strip the insulation form the end of the wire.

3.Connect one end of the wire to one terminal of a dry cell, and  the other end to a terminal of the switch.

4.Prepare second wire. Connect this wire to the other terminal of the dry cell and the other end of the switch.

5.Now close the switch, and try to pick up paper clips. Open the switch, and the small nails or paper clips fall.

Why it works:

     Electricity from one part of the dry cell flows through the many turns of wire back into the dry cell.

     When electricity flows through a wire,  the wire has magnetic power around it. If the wire happens to bein the form of coil, the magnetism is even stronger.

     An iron nail inside the coil become a magnet. This is true only so long as the electricity is flowing in the circuit. It is a magnet when you want it to be.