Hila Electromagnet with Switch.
When electricity flows in a conductor a weak
magnetic field appears.
Wind a coil of wire around an iron core and this magnetic field
becomes more powerful.
Link to Hila Basic Electromagnet Information
The image below shows a simple electromagnet, a
coil of wire wrapped
around an iron nail connected to an AA Battery.
The link below shows how we build an electromagnet with a switch.
This site provides support for constructing the Hila Electromagnet Kit.