A bar Magnet? It should be described as it's shape. Permanent Magnet or temporary Magnet ,they distinguished by their magnetism can be hold or not. Permanent magnet,as I know, there are some...
yes,but it can loose it's property by heating,hammering and dropping
It is only magnetized when electricity is run through it. Once you stop the electron flow it reverts back to its original state.
They are temporary, they can only attract for a few seconds, as permanent magnets can attract for as long it is needed.
Oscillate, wiggle and wobble, turn lazily to and fro, and eventually come to rest pointing roughly north and south.