6th Class Science Fun with Magnets Magnet Force and Field

       Magnet

Magnet is a substance which attracts magnetic materials such as iron, nickel, steel and cobalt. Magnets of different shape and size are made to serve our different purposes. Like U-shaped magnet, cylindrical magnet, bar magnet etc.

Magnetic Materials: The materials which are attracted by a magnet are called magnetic materials. For example iron, nickel, steel and cobalt are magnetic materials.

Note : Magnetic Materials: The materials which are not attracted by a magnet are called non- magnetic materials. For example copper, aluminium, air, water, rubber etc. are non-magnetic materials. 

Non-Magnetic Materials: The materials which are not attracted by a magnet are called non-magnetic materials. For example copper, aluminium, air, water, rubber etc. are non-magnetic materials.

           Magnetic Field

Magnetic field is the region around a magnet in which a magnetic material experience force applied by the magnet. When we bring any magnetic material such as iron, nickel, cobalt near a magnet, it experience a force.

Magnetic Compass:

It is a magnetized needle pivoted freely at a point. It is used to find the direction.

           Poles of a magnet

The regions of a magnet where strongest magnetic fore is experienced by a magnetic material are called poles of the magnet. A magnet has two poles, North Pole and South Pole. A freely suspended magnet always comes to rest in north-south direction. The pole which directs toward the north direction are called north pole and the pole which directs towards the south direction are called south pole.

           Force of Attraction and Repulsion between Magnets

When North Pole of a magnet brought near the north pole of another magnet, force of repulsion is experienced between them. And when North Pole of a magnet is brought near the south pole of another magnet, force of attraction is experienced between them. So we can say like poles repel each other and unlike poles attract each other.

           Uses of Magnet

It is used in various equipments like refrigerators, video tapes, radio, etc.

It is used to separate magnetic materials from waste.

It is used to make magnetic compass.

      Which one of the following is a magnetic material?

(a) Glass

(b) Plastic

(c) Wood

(d) Cobalt

(e) None of these

Answer: (d)

     Which one of the following statements is correct?

Statement 1: The materials which are attracted by a magnet are known as magnetic materials.

Statement 2: The materials which are not attracted by a magnet are called non -magnetic materials.

(a) Statement 1

(b) Statement 2

(c) Both statements are correct

(d) Both statements are incorrect

(e) None of these

Answer: (c)

Magnet is a substance which attracts magnetic materials.

Iron, nickel, steel etc. are magnetic materials.

Paper, plastic, wool etc. are non-magnetic materials.

Magnetic compass is used to find direction.

A magnet has two poles.

A freely suspended magnet always stops in north-south direction..