E&M > Magnetic
Fields and Forces > Torque on Coils
DCS# 5K40.18
SIMPLE DC 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
The coil rests on frame
connected to the battery, and rotates in the magnetic field.
NOTES
The commutator behavior is
achieved by scraping half of the insulation off the wires
where they contact the paper clips. It is necessary to
clean the contacts before use (by gently re-scraping them) to
remove any oxidation or other build-up.
