magnets when cut centrally & try to join in the same direction will not join.WHY?

Question

If a magnet cut in to 2 pieces & tried to join in the same direction,it will not join.but if we rotates one piece through an angle 180degree & tried to join ,it will join.My question is that why the magnet pieces are not joining in the first case & what happens in the next case?

Answer 1

let us understand it in a simple way:
Suppose you have a magnet as shown below:
[ N ]
[ S ]

By cutting the magnet centrally, if you mean cutting it vertically, then we would obtain the following configuration after cutting the magnet:
[N] [N]
[S] [S]
That is to say we have resulted in two magnets with polarities as shown above.Now as we all know that like polarities(N-N, S-S) repel and unlike polarities(N-S,S-N) attract, the result follows that the two magnet in above configuration repel each other while they attract when one of them is rotated by 180.
[When one of the magnet is rotated (say the second one) the following configuration results:
[N] [S]
[S] [N]
and hence the result.]

Answer 2

A magnet is an object that has a magnetic field. It can be in the form of a permanent magnet or an electromagnet. Permanent magnets do not rely upon outside influences to generate their field. They occur naturally in some rocks, but can also be manufactured. Electromagnets rely upon electric current to generate a magnetic field - when the current increases, so does the field.

All magnets have at least two poles: that is, all magnets have at least one north pole and at least one south pole. The poles are not a pair of things on or inside the magnet. They are a concept used to discuss and describe magnets.

The same holds true with magnets. There is not one place where all of the north or south poles are. If a magnet is divided in two, two magnets will result and both magnets will have a north and a south pole. Those smaller magnets can then be divided, and all of the resulting pieces will have both a north and south pole. In most instances, if the material continues to be broken into smaller and smaller pieces there will be a point where the pieces are too small to retain a net magnetic field. They won't become individual north or south poles though; instead, they will just lose the ability to maintain a net field. Some materials, however, can be divided down to the molecular level and still maintain a net field with both a north and a south pole. There are theories involving the possibility of north and south magnetic monopoles, but no magnetic monopole has ever been found.

Answer 3

First let me recall you that a magnet has always a north pole and a south pole

When you cut a magnet the following arrives.

The two pieces have automatically EACH a north pole and a south pole.

In the first case you have a north pole facing a north pole. They will not attract each other.

In the second case, you have a north pole facing a south pole and they will attract each other

Answer 4

This is because you don't have monopoles in magnetism unlike in case of electricity. Each tiny particle is a dipole and if you cut the magnet into two, they act as two different magnets and the faces near the cut portion are like like poles and so they repel.

Answer 5

sir, my answer is basically magnets have dipole nature if cut the magnet each piece will act as dipole having north and south pole so after cutting the both side facing each other will act as north and south poles actually we know that unlike poles attract each other and like poles repel each other so if turn the magnet for 180degree after cutting poles act as north- north or south-south that depends on the placing of the 1st position by which u placed the magnet .

Answer 6

Well you first need to understand a very peculiar property of magnetic lines of forces...These lines of forces are like tubes...and they emanate from one corner of the magnetic body(called north pole) and they coil back and end up at its opposite side(called as south pole)...

When it comes in contact with a similar magnet, and if its north pole comes accross the north pole of the other, the tubes(and hence the magnets) would definitely repel each other...they attract each other the same way if its exposed to an opposite pole....

If u cut the magnet into two parts, it would still have these lines of forces active in them.....so these two parts still hav tubes of forces emanating from one and ending up at the other corner of their bodies....in short these two parts now start behaving like two independent magnets!!

These lines of forces are an indispensible part of a magnet and once they disappear from them, the magnet stops behaving like one...and these are the very forces responsible for the magnetism in these magnetic substances(called as magnets)....

And this is exactly the reason why opposite poles attract n same poles repel each other :)

Hope this was helpful,....

Rajit

Answer 7

when u cut the magnet centrally ( vertically) u ll get two magnets of simillar properties.

now simillarity is in case of the field of the magnets aslo. field of a magnet consists of lines of force. the lines of force repel each other.

in the first case, the magnetic fields of both the magnets are oriented in the same direction. since the lines of force are in the same direction, they repel each other and so the magnets do not join.
in the second case, the magnetic fields are oriented in opposite direction and so the lines of force attaract each other. the magnet pieces also attract each other.

Answer 8

as we all know the positive and positive of magnets will not join.now consider that the electrons of a magnet flow in a constant direction,so when the magnet is cut in half the (once)negative becomes the positive,and the (once) positive becomes the negative because the electrons are still flowing the same direction.

Answer 9

If you try to put them together the same way they were before they were cut in two, the N will repel the N and the S will repel the S.

Answer 10

Dear Bipin,
Magnatism is due to arry of molecules in a iron. When u are cutting from the center of a magnate u create two same poles. So like poles repails.