0
How would reduce the reverse polarity in magnetization of permanent magnet?
Wiki User
∙ 14y ago
Degauss it and remagnetize it in a field. Best when heated over the magnets Currie point. Cooling it down in a field the reverse of what you started with.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
What is demagnetisation?
the process of which the magnetization of a magnet is removed
When a magnet splits why does the polarity change?
The polarity of a magnet does not change if the magnet is cut into pieces. Each piece has the same polarity that it had before. In particular, if you break a bar magnet in half at the midline between the two poles, you will end up with two magnets N-S and N-S. No reversal of polarity occurs.
Is magnetite a magnet?
No, it's a permanent magnet. It consists of an iron oxide, and iron is a permanent magnet.
How do you reverse the polarity of a compass that is 180 off?
Well, the easiest way to reverse the polarity of a magnet is to just turn it around. However, inside of every piece of steel, there are magnetized pieces that will make the steel an induced magnet when a magnet is placed on or by the steel. By putting the oppositely polarized magnet on or by the same steel, you may be able to reverse the magnetism of the steel. Or by making it a core of a coil in which direct current flows in such a direction as to re-polarize it
What are likely to be affected by a magnet?
Both permanent magnets and electromagnets. -Apex
How is a DC permanent-magnet motor reversed?
Reverse the polarity of armature windings of the motor.
Can small permanent magnet motors be reverse direction if the direction of current flow to the motor is reverse?
Permanent magnet field motors. With a these motors, a permanent magnet is used to replace the field coil. DC power is connected via the brushes, to the armature only. Reversing the polarity, will cause the motor to reverse its direction of rotation. It is very common to use a switch to intentionally reverse to the polarity, to allow reversal of the motor if desired.
How can you reverse the rotation of barlow's wheel?
Reverse the polarity of the magnet.
What can be done with an electromagnet that cannot be done with a regular permanent magnet?
Its strength can be easily manipulated (e.g. you can switch it off). Or the strength can be varied with the current. Electromagnets can reverse polarity (by reversing the current).
What is magnetization of iron?
the process of converting iron to a permanent magnet is called magnetization. As iron is a ferro magnetic material it is magnetized by applying strong magnetic field across it , this makes the alignment of all the magnetic dipoles present in iron in the same direction .Even after the external magnetic field is removed they retain their arrangement , thus it becomes a permanent magnet
What is A magnetic substance can also be made into a?
If you are talking about a non-magnet item then the item will become a magnet for a period of time. Changes in heat, how much it is used, or time can disable the magnet. Magnet!
What is demagnetisation?
the process of which the magnetization of a magnet is removed
How rare is it for a magnet to reverse it's polarity by itself?
About 0.15% chance to happen within a time period of a year.
How do you reverse polarity natural magnet?
Demagnetize it, then remagnetize it the opposite direction. It's a lot of work and it would undoubtedly be easier just to repaint it and claim you reversed the polarity.
Which magnetic material can retain permanent magnetization?
False permanent magnets can but electromagnets need a running current A+
How do you use the word polarity in a sentence?
The polarity of both ends of a magnet is different. The positive and negative polarity exist for a magnet.
How do you reverse compass magnet polarity?
this video explains it http://es.youtube.com/watch?v=xVXJikShnKI
