Does every magnet necessarily have a north and south pole?

Answer 1

yep

Answer 2

The basic difference between an electric field and magnetic field is:

In the case of electric field the field (the path in which a free unit positive charge will flow) starts from positive charge and ends in a negative charge. That is they are not closed. In nature there are free positive charge and negative charge.

But in magnetism we don’t have a free north pole and free South Pole. The field starting from the so called North Pole, after touching the so called South Pole, continues to go further and reach the North Pole. That is the field is a closed one. The field starting from North Pole finally ends in North Pole. Thus strictly speaking there are no poles at all. Further fields do not cross each other. Therefore, the fields cannot end at a single point.

In side a magnet the fields are denser than in out side. However, for studying magnetism the concepts of poles are useful; but in reality there are no such poles.

When we study the behavior of a magnet, we are not bothered about the field inside the magnet and hence we take the two ends of the magnet where the field density is mostly concentrated as the two Poles. Inside the magnet between the two poles the field is uniform.

A circle can always have two arcs a bigger one and a smaller one. The ends of smaller arc can be considered as Poles. Take this analogy to magnetic fields.

Answer 3

Yes. Just like you cannot make a single-faced coin you cannot make a single pole (monopole) magnet. The reason is that magnetism results from something called the "dipole", i.e. two opposite poles on the atomic scale. Since this is the basic consitituent of magnetism, you cannot get a single pole magnet. This is different than electrical fields, where you can find a single positive or negative charge. Got the point?

Answer 4

Almost certianly.

A common topic in crackpottery is the so-called "magnetic monopole" or a single north or south pole by itself.

One of Maxwell's equations of electrodynamics is "dell cross B equals zero." The implication of this is that if a magnetic field line begins, it must end in another pole. This can be contrasted with electric charge which CAN have "monopoles." These are called ions, or electrons, or protons, or anything with an unbalanced electric charge.

As far as science knows, there has never been an example of a magnetic monopole found. Well, I've never heard of it anyway.

Answer 5

Yes,magnet system is only working with north pole and south pole.

Answer 6

Yes. Since magnetism is caused by moving charges, there are two ways of looking at those electrons gyrating (from the front, or the back),

So if there is a "front", there *must* be a "back", therefore, we always have two poles, labeled "North" and "South".

Answer 7

Conventionally, yes. The equations of electromagnetism are not usually written with the magnetic equivalent of an electric charge--which is termed a "magnetic" charge--but physicists have toyed with the inclusion of magnetic charge. For one thing, they make the whole picture more pleasantly symmetric: everything would be the same if we then replaced the "electric" everywhere with "magnetic". P.A.M. Dirac famously showed how the existence of a magnetic charge would explain the quantization of electric (and magnetic) charge.

But no free magnetic charges have ever been found.

Answer 8

The last time I looked at this - which was in college - there were two competing quantum theories of magnetism. One predicted the possibility of magnetic monopoles, the other said they were impossible. The second was winning, aided by the fact that no one has ever seen a monopole. So - yes seems to have the day.

Answer 9

Yes they all have N and S poles. It is inherent to have two poles to be a magnet. Due to the structure of the particles in the matter.

Answer 10

yes the magnet needs an opposite pole to attract and the same pole to go away from each other

Answer 11

Yes it has to or there is no magnetism.
The poles reaction to each other cause the magnet to attract