3.10

What happens if you cut a magnet bar in small pieces?

• Each piece becomes a complete magnet having both a north and south pole.

• It will not be magnetized.

• It would explode.

What are the two properties that affect magnetism?

• Force only.

• The poles of the earth.

• Heat and Strong Force.

2-What determines the direction of a magnetic field using lines of flux?

• The thickness of the lines of flux

• The color of the lines of flux

• The length of the lines of flux

• The orientation of the arrowheads on the lines of flux

Which pole of a freely suspended magnet points toward the Earth's geographic ?

What Demagnetizing is called?

Define Hard Iron

Ferromagnetic materials are subdivided in a group what is the difference between them?

What rule is used to obtain the direction of a small part of the coil in a magnetic field?

• Left hand rule.

• Corkscrew rule.

• Right-Hand rule.

to find out the ends of a magnet, the north pole and the south pole one uses?

• Left hand rule.

• Right hand rule.

• Corkscrew rule.

What metal is a soft magnetism

• Iron

• steel

• copper