MAGNETISMMAGNETISM

Damayanti Behera (Sc. Tr.). For class – VIII.

DEFINITIONDEFINITION

The metal which attracts certain other metals and shows the direction like magnetite is called as Magnet. This quality of a metal is known as magnetism.

TYPES OF MAGNETS

1. Natural Magnets2. Artificial Magnets

Natural MagnetsNatural Magnets

The magnet which is present in nature is called natural magnet. Its shape is irregular, and it has weaker force of attraction.

Lode Stone (Magnetite FeLode Stone (Magnetite Fe22OO33).).

Magnetite Stone.

Artificial MagnetsArtificial Magnets

Magnetic substances like Iron, Cobalt, Nickel are converted into magnets by the process of friction or, the process of induction are called artificial magnets. Here the force of attraction is stronger.

Bar MagnetBar Magnet

Horse Shoe MagnetHorse Shoe Magnet

Ball Ended MagnetBall Ended Magnet

Magnetic NeedleMagnetic Needle

Magnetic CompassMagnetic Compass

ElectromagnetElectromagnet

PROPERTIESPROPERTIES

1- Magnet attracts only magnetic substances.2- Every magnet has two poles and it is present towards

the end of the magnet.3- The magnet has directive properties.4- Like poles repel and unlike poles attract each other.5- The property of magnetism is destroyed in a magnet

by striking through hammer or by heating in a flame.

6- The two poles remains always in pair at any point of magnet.