Question

question: what happens if you rub an iron bar with a piece of magnetite or an artificial magnet? answer options: select one of four the domains shift so that the electrons spins cancel each other out. the domains shift so that the electrons spin in many different directions. the domains shift so that the electrons are spinning in the same direction. the domains remain exactly where they are.

Explanation:

When an iron bar is rubbed with a magnet (magnetite or artificial), the magnetic domains in the iron (regions where electron spins are aligned) shift. Rubbing aligns these domains so that electrons' spins are in the same direction, magnetizing the iron. The first option is incorrect as spins don't cancel; the second is wrong as they align, not spin in many directions; the fourth is wrong as domains do shift.

Answer:

The domains shift so that the electrons are spinning in the same direction.