E&M > Magnetic Fields and Forces > Torque on Coils DCS# 5K40.18
SIMPLE DC MOTOR
simple motor
APPARATUS
D battery 202-02-D1
magnet 202-20-B2
coil of wire 202-20-B2
frame or paper clips 202-20-B2

DESCRIPTION
Coil rests on frame connected to the battery, and rotates in the magnetic field.

NOTES

Commutator behavior is achieved by scraping half of the insulation off the wires in contact with the paper clips.

REFERENCE

http://www.exploratorium.edu/snacks/stripped_down_motor/index.html