An iron bar can be made magnetic when ______. A. its magnetic domains line up . B. it rotates it poles to line up with another magnet. C. it spins it's electrons in different directions.

I think the correct answer from the choices listed above is option A. An iron bar can be made magnetic when its magnetic domains line up. These magnets are called ferromagnet which has unpaired electrons. In the absence of an applied field, the magnetic moments of the electrons in the material spontaneously line up parallel to one another.

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sarajevo sarajevo · Answer 2 · 2019-07-08T07:39:20+02:00

Answer:

A. its magnetic domains line up

Explanation:

In a nonmagnetic field the magnetic domains of iron are randomly oriented, however, in the presence of a magnetic field the magnetic domains of iron line up. All the In a nonmagnetic field the magnetic domains of iron are randomly oriented, however, in the presence of a magnetic field the magnetic domains of iron line up. All the north poles of the magnetic domain face one direction and the south poles of the magnetic domain line up in the opposite direction.