When is a masnet called demagnetised? Weitere ses of magnets ang answer questions: Give any for uses of magnet Simplain the process by which an iron rod can be megnetised.
Answers
Explanation:
(*please checkout your spellings*)
When a magnetized magnet is exposed to a strong magnetic field that is established in opposition to the magnet's magnetization, part of the magnet may be demagnetized. This demagnetization essentially reduces the effective field of the magnet and the magnet's performance will therefore degrade.
Magnets are used in magnetic compass, doorbells, refrigerators.
Magnets are used in dynamos, motors, loudspeakers, microphones etc.
Ceramic magnets are used in computers.
Magnets are used in toys to give a magic effect
magnetizing -
Determine the poles on your magnet. On most magnets, this should be shown with an N on one end and an S on the other.
Decide which pole you want to use to create your magnet. This is purely preference and will not affect the strength of your magnet.
Position the magnet against the iron rod so that only the chosen pole is touching the rod.
Begin at one end of the rod and rub the magnet down the length of the rod in one continuous movement.
Continue stroking the rod with the magnet until the rod has the desired magnetic strength. You may want to periodically test the magnet, as there is no specific number of strokes to use.