Lesson: Attraction and Repulsion between Permanent Magnets Physics • 9th Grade
In this lesson, we will learn how to describe the forces of attraction and repulsion between permanent magnets, and what materials permanent magnets can be made out of.
Sample Question Videos
Like poles . Unlike poles .
A bar magnet is brought near to a similarly sized bar of unmagnetized iron. The bar magnet induces a magnetic polarity in the iron. Which end of the bar of iron, or , will be the north pole of the induced magnet?
A bar magnet is hung from a thread that is attached to a stand. The magnet can pivot freely.
What will happen if the north pole of a second bar magnet is brought near to the north pole of the bar magnet that is hanging from the thread?
What will happen if the north pole of the second bar magnet is brought near to the south pole of the bar magnet that is hanging from the thread?