Electromagnets were used to help invent the radio and are even still used today, like in coin vending machines, too – Check it out!
- 2-3 feet of ball wire (copper wire with a plastic insulated sheathing)
- Large nail
- Tape (optional)
- C or D battery
- small metal objects (paper clips, thumbtacks, etc.)
- Scissors (or a wire stripping tool)
Do It And How 