What you need to prepare
- A battery.
- A thick pencil.
- Copper insulated wire with a diameter of 0.2-0.3 mm and a length of several meters (the more the better).
- Scotch tape.
Namatay wire tightly round the pencil, not reaching its edges by 1, see Over one row - amatevi another top in the opposite direction. And so, until the end of the wire. Do not forget to leave free the two ends of the wire 8-10 refer To the coils after winding is not unwound, fasten them with tape - Scotch.
Sachiti the free ends of the wire and attach them to the connectors on the batteries.
Turned out to be a magnet that will attract small metal objects.