how would u tell a magnet?

Question

if u r given exactly similar blocks , one iron and other magnet how would u tell which one is the magnet without the help of anything else..?........ answering this question could hav got me a job....

Answer 1

Yes, that looks simple but is a tricky question. The solution is something like this.

Assume both are bar shaped. Place one of them on a table and with the other one pointing vertically downwards, approach the piece on the table exactly at the midpoint.

If the piece on the table is attracted, it is the iron piece and the one in your hand (vertically facing downwards) is the magnet.

If there is no attraction or the attraction is very feeble, the piece in your hand is the iron piece and the piece on the table is the bar magnet.

You can confirm by switching them and reversing the experiment.

Explanation:

The iron piece is equally well attracted at any place along its length, but for the bar magnet, the attraction will be stronger at both the ends (poles) compared to the centre where the magnetic field is almost zero.

Answer 2

Holding one block in position, rotate the other block 90, 180, and 270 degrees. Then hold the other block in position and rotate the first block 90, 180, and 270 degrees.

A magnet will attract the iron block more when the north or south pole is facing it, less when the poles are facing the sides.

Answer 3

A magnet is a fabric or merchandise that produces a magnetic container. This magnetic container is invisible yet is in charge for the main astonishing sources of a magnet: a rigidity that attracts on different ferromagnetic components, which includes iron, and attracts or repels different magnets. an eternal magnet is an merchandise made out of a fabric that's magnetized and creates its very own continual magnetic container. a in many cases happening occasion is a refrigerator magnet used to hold notes on a refrigerator door. components which may be magnetized, that are additionally those that are strongly interested in a magnet, are observed as ferromagnetic (or ferrimagnetic). those comprise iron, nickel, cobalt, some alloys of uncommon earth metals, and a few clearly happening minerals which includes lodestone. even regardless of the undeniable fact that ferromagnetic (and ferrimagnetic) components are the only ones interested in a magnet strongly adequate to be regularly seen magnetic, all different components respond weakly to a magnetic container, by utilizing certainly one of numerous different styles of magnetism. Ferromagnetic components could be divided into magnetically "gentle" components like annealed iron, which could be magnetized yet do no longer tend to stay magnetized, and magnetically "no longer basic" components, which do. everlasting magnets are made out of "no longer basic" ferromagnetic components which includes alnico and ferrite that are subjected to particular processing in an invaluable magnetic container for the period of manufacture, to align their inner microcrystalline shape, making them very no longer basic to demagnetize. To demagnetize a saturated magnet, a undeniable magnetic container could be utilized, and this threshold relies upon on coercivity of the respective cloth. "no longer basic" components have extreme coercivity, while "gentle" components have low coercivity. As for the mormon attraction to magnets i propose you submit that for the period of faith.

Answer 4

i think the iron block is heavier than the magnet block.

Answer 5

throw it on the ground (can you do that?)
magned would break. iron would not.

Answer 6

find which one attracts to metal.