What happens to a Magnettic needle If  u r on any magnetic pole?
609408
If you are at the North pole, it would settle on one of the other north poles.  Actually, there are three of them.  Closely spaced but technically three.   \n\nIf you were at the magnetic center point, the needle would probably dip down a little and lose all directional reference. Probably would not "spin", but would be subject to randon movement.
363907
For dia magnetic substances the permeabilities are slightly less than unity. Hence the field is hardly affected.\n\nIf a diamagnetic needle is placed in a nonuniform magnetic field it will be repelled.\n\nIn uniform field the needle turns perpendicular to the flux line.\n\nInside a solenoid the magnetic field is uniform. The position of dipoles are such that the external magnetic field is not affected much.
1009498
Dont know much but plz try this\n\nhttp://www.google.co.uk/search?hl=en&sa=X&oi=spell&resnum=0&ct=result&cd=1&q=magnetic+particle+testing+the+testing+particles&spell=1
519039
It really depends.  if you are trying to pass current through the magnet, hooking up the N pole to the + side of the battery, and the S pole to the - side of the battery, then nothing much, other than the magnet may heat up a bit.\n\nIf you are wrapping a copper coil around the magnet and then passing current through the coil, then depending on which way the current is flowing, and how strong a current you are using, you'll either make the magnet stronger, or make the magnet weaker.
764447
It depends on how powerful a magnet you use. To get a magnet to perform all of those tasks, it will need to be a really powerful one.
101219
You would have to be traveling in a car at about 30 km/h because the magnetic north pole moves.  So your compass would be shaking back and forth as the magnetic north pole "wobbles" as it moves towards siberia.\n\nIf the magnetic north pole had been stationary, then your needle would point straight down.  You can confirm this by holding a bar magnet underneath your compass.
569770
When you are exactly at  the north or south pole, the compass needle just dangles. It experiences equal force to point in any direction.
1161988
No.\n\nBut it can when it is heated.\n\nIf you heat a magnetic material above its Curie temperature, it depolarises and stops being magnetic.
152782
If a bar magnet breaks into two, then there will be two magnets, each with a N and a S pole.
1097908
Iron, cobalt and nickel can be magnetic. They can be made to have polarity. Poles that are alike repel and poles which are not alike attract. A magnet will attract all of them if they are not polarized. If they are polarized, a magnet will attract or repel according to the polarity.\n;-D
1089728
there is a layer of magnetic rock beneath the earth's crust that has a magnetic force pointing in one set direction. the needle of a compass is made of a material that reacts with this magnetic force and is pushed in the same direction as the force points
1072982
a)It is already a magnet. It can not become an electromagnet.\nb)Can not happen\nc)If this happens it will only be for a short period\nd)After a long time its power may be reduced but not lost completely\n\nSo I can not tell for sure. Mots likely c
1029513
has to be metal, preferably in several sheets not touching each other. Wood and plastic do not stop magnetic field.\n\nThick piece of lead would definitely work, and is completely safe (as long as you do not drop it on your foot and wash your hands afterwards)
1045884
http://en.wikipedia.org/wiki/Magnets\n\ngo there if u wanna find out, i only know simple version...
402683
Electro-magnets use electricity to temporarily align all of the atoms in a ferrous material to a N-S position. When the electricity is turned off, the atoms return to their original misaligned state, losing much of its magnetivity. It never completely loses all of it, as some atoms will remain in the alligned state, creating a "Gauss" feild around it.
54860
When talking about a magnet large enough to be handled (and broken), it can be thought of as a collection of smaller magnets.  These smaller magnets are all aligned from north to south poles on each end.  If you got two 1" x 1/2" magnets, and put them end to end, N to S, they would make a magnet double the length of the original, and the ends would attract.  If you take the now 2" magnet apart, you have two magnets.  In practice, this is exactly what happened when you broke the magnet.  The pieces are still magnetic, with a north and south pole.  Therefore if you take the 2 pieces and put north to north or south to south, they will repel, and vice versa if north to south, they will attract.  No one yet has found just a south pole, or just a north pole, and that causes a stir in the scientific community.  You can keep crushing the magnet to bits and the tiny fragments will still have a north and south pole, and act like tiny little bar magnets.
1122646
NO!  Normally yes, but right up near the MAGNETIC north OR the magnetic South, it varies.\n\nIf you are between the true north and the magnetic North, the end of the other needle can spin or point to the true North.