PURPOSE: To demonstrate electromagnetism.

DESCRIPTION: The absence of a core makes the physics a bit simpler.

SUGGESTIONS: Compare this one with the same coil with a magnetic core (demonstration J6-02).

REFERENCES: (PIRA unknown.)

EQUIPMENT: Battery charger, cables, switch, double banana wire, 46-turn coil, box of magnetic and non-magnetic junk.

SETUP TIME: 5 min.