E&M
> Magnetic Fields and Forces > Magnetic Fields
DCS#
5H15.50
MAGNETIC FIELD OF
A
TOROID
APPARATUS
slinky in plexiglass
202-20-D
iron filings
202-20-D6
3 A DC power supply
202-08-D
key switch
101-09-D4
document camera
201
DESCRIPTION
Iron filings align along the
magnetic field
of current-carrying toroid.
NOTES
Set power supply to provide
about 3
A.
Close switch for not longer than a few seconds while tapping plexiglass
so that iron filings settle along field lines.
