Physics Demo Number: 187
Approximate
Run Time: 5 min
Pasco Variable Gap Magnet and Accessories
Demo Description
A powerful permanent magnet (7500 Gauss maximum) with adjustable spacing between its pole pieces is housed in the kit.
Various options are to demonstrate eddy currents , induced voltages, and a Currie Temperature motor.
This kit is suitable mostly for small classes.
Scientific Principles
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Eddy currents are generated when magnetic flux changes in a conductor that can supply continuous loops for induced currents.
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A para magnetic material can lose its ability to be attracted to a magnet when it is heated sufficiently.
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Voltages can be induced by moving wire through a strong magnetic field.
Equipment
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Pasco Variable Gap Magnet
-
Curie Point Demonstrator
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Swinging Metallic Pendula
Equipment Location
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All items are housed in Kit(187) on [B-3-4].
Instructions
The
first photo gives a view of the magnet, with its pole pieces
screwed down close together and with the Curie Temperature
demonstrator motor nestled between the pole pieces.
The
second photo gives a view of the apparatus in the first photo
obtained by moving the camera around 90 degrees counterclockwise
from its inital position.