PASCO EM-6723 User Manual

®

Instruction Sheet

012-10120A

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.

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

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 wind­ing 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.

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• Do the above experiment with a ScienceWorkshop 750 inter-
face and a voltage sensor. Use the voltage sensor to measure

500-Turn Field Coil EM-6723

the induced emf in the detector coil.

• Drive the coil with direct current. Use a magnetic field sen­sor to find the strength and direction of the field at various
locations.

Specifications

Turn s 500

Wire copper, 22 AWG (0.64 mm diameter)

Inner radius 10.06 cm

Outer radius 11.37 cm

Coil width 1.6 cm

Body material Polycarbonate plastic

Technical Support

For assistance with any PASCO product, contact PASCO at:

Address: PASCO scientific

10101 Foothills Blvd.
Roseville, CA 95747-7100

Phone: [phone] (worldwide)

800-772-8700 (U.S.)

Fax: [phone]

Web: www.pasco.com

Email: [e-mail]

Limited Warranty For a description of the product warranty, see the
PASCO catalog.
Copyright The PASCO scientific 012-10120A

Instruction Sheet

granted to non-profit educational institutions for reproduction of any part of
this manual, providing the reproductions are used only in their laboratories
and classrooms, and are not sold for profit. Reproduction under any other
circumstances, without the written consent of PASCO scientific, is prohib­ited.
Trademarks PASCO, and PASCO scientific are trademarks or registered
trademarks of PASCO scientific, in the United States and/or in other coun­tries. All other brands, products, or service names are or may be trade­marks or service marks of, and are used to identify, products or services
of, their respective owners. For more information visit
www.pasco.com/legal.

is copyrighted with all rights reserved. Permission is

500-Turn Field Coil

®

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