What is the difference between the interaction of a magnetic needle with an iron rod and its interaction with a permanent magnet?

differs in that either end of the arrow is attracted to the iron rod, one end of the arrow is attracted to the pole of the permanent magnet, and the other is repelled from it.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.