There are two parallelepiped metal bars, identical in appearance and size.
The first is a magnet and the second is an ordinary iron. Is there an experiment available to determine which one is a magnet?
Solution. Posted on Monday, December 22, 2014.
The magnetic field is weakest in the middle of the magnet.
In this connection, place A on the table and bring one end of bar B close to one end of bar A, and then take it close to the other end of bar A, and finally take it close to the center of bar A. If it experiences an attractive force at both ends of the bar A and no force at the center of A then bar A is a magnet. In another case, B is a magnet.