Only magnets can cause a magnetic field.
Electric current builds up a charge in the wire containing it.
Investigate what happens to a compass when placed next to a current carrying wire. Discover a relationship between electric current and a magnetic fields. Develop skill in using tools like a compass to probe for things we can't see directly. A magnetic field is generated around a wire when a direct current passes through it. Students in groups of four will investigate the relationship between a magnetic field and an electric current.