Title
How to teach “Electromagnetic induction”
Syllabus for workshop
Mr.Ishiro Toda
To introduce the essential basic experiment for understanding the principle of
Objective
electromagnetic induction and the progressive experiment that applies the principle.
Additionally introduces how to utilize our daily life products for fully understanding
the principal.
１．To investigate the magnetic field around the straight line current.
２．To investigate the magnetic field around the circular current.
３．To investigate the magnetic field around the solenoid coil
４．To confirm that when the bar magnet is put in and taken out from the
solenoid coil,
an electric current is then generated.
５．To investigate the change of the magnet flied due to the circular current by
Content
distributing the alternating current (speech current) to the Pascal electric wire.
６．Understands the electronic goods used for Electromagnetic induction.
１）The principle of the microphone and speaker must be the same.
２）The principle of the dynamo and the motor must be the same.
Notice）Pascal electric wire：The Electric wire that is modified to be the coil rolled
10 times with the length of electric wire being approximately 8 meters. 10
wicks are connected alternately in 1 body of Pascal electric wire.
Objective
(Aim)
１．Experiment subject１～４：To study the basic matter of Electromagnetic induction.
２．Experiment subject５,６ ：To study the familiar use of the electromagnetic
induction
１．Galvanometer for visually impaired６.Radio- cassette player
Tool
11. Amplifier
２．Compass for visually impaired ７．Dry battery 12. Compass for Magnetic
Material
field observation
Items that are
３．Pascal electric wire
８．Speaker
used.
４．Alnico bar magnet
９．Photoreceptor
５．Earphone attached with coil 10. Hand Crank Generator
Modified
points
To study the basic characteristic of Electromagnetic induction gradually by using
experimental devices as well as making their own device for understanding certainty.
Moreover, the student will learn the familiar usage of Electromagnetic induction.
Alternate the voice current to the Pascal electric wire that is arranged in a circular
Highlight
shape. Grasps the change of magnetic field by the coil that is placed on the head and
listened through by earphone.
１．Have the student understand the difference between direct current and alternating
Attention of
materials
current.
２．Have the student understand that the Electric wire is not only a straight line but
that the round shape of electric wire (coil) supports the modern culture. (Dynamo,
Motor< microphone and speaker, etc.)
１．Assumes that student participation will be approximately 10 persons.
Other notices
２．Divide 10 students in to 2 groups to attend a class.
３．Prepare the materials that allow 10 participants to perform an experiment.
However, if materials are insufficient, please prepare materials for group use.