but if the magnets are spheres, then the magnetic force must be uniform in all directions,hw come it hs poles?

Answer 1

I will try to put this as simply as possible, given the amount of space we have here for this discussion.

Just because you have a magnet that is in the shape of a sphere does not mean that the magnetic force (not field) is uniform in all directions. a presumptious statement.

the magnetic force of the earth (which is not truly spherical and should be another topic of discussion) is created by induction at the core of the earth. regions of this core are hotter than other regions and cause movement in the magma creating a magnetic FIELD. because molten material is moving at different speeds in different regions the magnetic force that is created is stronger at some places and weaker in others.

The poles are created because the movement of magma creates positive ions in the magnetic field to move outward toward negative ions, the magnetic force is so great that it moves those ions out beyond the surface of the earth and back to where negative ions are at the opposite side of where the positive were created. this movement is constant and the poles move with it.
imperceptivly, over thousands of years.
so, in a few millenia, the earths poles will change places.

Answer 2

according to me if u make a sphere as a magnet, and if u want the magnetic force to be uniform..then the outer surface of sphere should be the north/south pole and the centre of the sphere should be the south/north pole...but this is not possible ..because, at the centre the molecules will repel each other due to the same pole all of them have and as a result will get scattered..so the centre will no longer remain as a pole..
so when u make a sphere as a magnet, the molecules will be arranged in a linear fashion so that like poles are directed towards one direction....so u cant expect the magnetic field to be uniform all over the sphere..
take earth as an e.g , even though earth is a sphere , the magnet inside it is imagined to be a cylinderical structure,running from the north pole to south pole..

Answer 3

A Magnet is the product of Inductive action on its Atoms by a larger Natural Magnet or through Electrically induced flux. The allignment of the larger magnet or the arrangement of the inducitng Electrical configuration will determine the polarity of New magnet. The concept of spherical magnet and its implications have fascinated Phycisists for quite some time now and several experiments are on record. Refer BRITANNICA AND WIKIPEDIA encyclopedias for more up to date knowledge.

Answer 4

<>No, the magnetic force is NOT uniform. There has to be a "positive" and a "negative" pole in any magnet and they will automatically align themselves at the farthest distance from each other; hence, polar extremes.

Answer 5

No they don't look electrons. The magnetic field is created by making use of the orientation of electrons interior the bar itself. the end result's the field, it truly is basically an unseen rigidity, till you position some thing in that rigidity that exhibits that's there, like the iron shavings

Answer 6

Super

Answer 7

even earth is a sphere
why earth has poles i.e north pole and south pole

Answer 8

same like Earth or any other planet