Subject: Demagnetization by AC supply - why should the magnet be removed SLOWLY?
Date: Wed Jan 27 06:58:45 1999
Posted by Michael Ho
Grade level: 10-12
School: Bukit View Sec Sch,Ministry of Education
City: Singapore State/Province: Singapore
Country: Republic of Singapore
Area of science: Physics
In demagnetisation of magnets, one method as described in some books is to place
the magnet in a solenoid connected to an ac supply, then remove the magnet
SLOWLY from the solenoid till about 2-3 metres away. Why slowly? What if it
were removed quickly, or removed only after switching off the supply?
Re: Demagnetization by AC supply - why should the magnet be removed SLOWLY?
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