PASCO EM-6723 500-Turn Field Coil - Manual

I n s tr u c t i o n S he e t
0 1 2 - 1 0 1 2 0 A
800-772-8700 www.pasco.com
®
500-Turn Field Coil
EM-6723
Introduction
PASCO model EM-6723 is a 500-turn wire coil on a ring-shaped
bobbin with a diameter of about 21 cm. The base of the assembly
has two binding posts for connecting 4 mm banana plugs. Use the
binding posts to connect a device to the coil. Do not allow the
current to exceed 2 A.
A 1/4-20 threaded mounting hole in the base allows the coil to be
fastened to other equipment, such as the EM-6715 Helmholtz
Base.
Holes in the sidewalls of the bobbin allow students to see how the
coil is wound. The holes are tangent with the inside of the wind-
ing so that students can measure the inner diameter.
Experiments
In combination with other equipment, the 500-Turn Field Coil
can be used in a variety of demonstrations and experiments,
including the following.
• Mount two field coils on the Helmholtz Base (EM-6715) to
create a Helmholtz coil.
• Drive the field coil with a triangle wave at about 500 Hz.
Use an oscilloscope to measure the emf induced in a detector
coil. Move the detector coil to find the strength and direction
of the magnetic field at various locations. Measure how the
induced emf depends on the angle between the field coil and
the detector coil. Vary the driving frequency to measure how
the induced emf depends on the time rate of change of the
magnetic field.
For details of this experiment see Christopher C. Jones,
Faraday’s Law apparatus for the freshman laboratory,
American Journal of Physics 1987; 55 (12): 1148–1150.
• Do the above experiment with a ScienceWorkshop 750 inter-
face and a voltage sensor. Use the voltage sensor to measure
Included Equipment Part Number
500-Turn Field Coil EM-6723
Related Equipment
200-Turn Field Coil EM-6711
Detector Coil (400 turn) EM-6712
Detector Coil (2000 turn) EM-6713
Helmholtz Base EM-6715
Recommended Equipment to Drive Coil (one needed)
ScienceWorkshop 750 Interface CI-7650
GLX Power Amplifier PS-2006
Low Voltage AC/DC Power Supply SF-9584A
Digital Function Generator/Amplifier PI-9587C