Physics Demo Number: 105
Approximate Run Time: 5 min
Electromagnet
Demo Description
A small coil consisting of many turns of small diameter wire is
driven by a 9V transistor circuit battery.
The coil is used with an iron core to produce an electromagnet.
Scientific Principles
Many ampere turns of current mimic a bar magnet.
Equipment
-
Coil of wire
-
9V Battery
-
Iron Core
-
Iron Nail for Load
Equipment Location
-
Kit (105) on [B-3-5]
Instructions
The
photo shows an iron bar (used as the magnet core) and iron nail
(used as a working load) for the coil of fine wire on the white
plastic spool.
The spool is energized by a 9-volt battery attached to the mating fixture affixed to the ends of the coil wire. The components live in Kit (105).