Question

a. fact or bluff

1. the magnets similar poles attract each other whereas the opposite poles repel each other.
2. a hung magnet always comes to rest facing north south.
3. magnetic monopole exist.
4. magnetic property is maximum at the poles.
5. magnet attracts ferromagnetic materials.

b. for each number, choose the correct answer.
the process by which the screws become magnets is called _6_ (electric, magnetic) induction
this same process is the reason why magnets _7_ (attract, repel) nonmagnetized magnetic substance such as the screw.
the screw becomes _8_ (a permanent, an induced) magnet with the end nearer the magnet having _9_ (the same, an opposite) polarity to that of the permanent magnet. hence attraction happens _10_ (after, before) magnetic induction occurs.

Explanation:

1. For question 6: Magnetic induction is the process where a material (like a screw) becomes magnetized due to a magnetic field. Electric induction is a different concept related to electric fields.
2. For question 7: Magnets attract non - magnetized magnetic substances through magnetic induction. Repel is for like poles of magnets.
3. For question 8: When a screw is magnetized by another magnet, it is an induced magnet. A permanent magnet has its own inherent magnetism.
4. For question 9: In magnetic induction, the end of the induced magnet (screw) near the permanent magnet has an opposite polarity (based on the law of magnetic poles).
5. For question 10: Attraction happens after magnetic induction. First, the magnetic induction occurs (the screw gets magnetized with opposite polarity) and then the attraction.

Answer:

1. magnetic
2. attract
3. an induced
4. an opposite
5. after