PHYSICS [3 Mark Question Answer]

Temporary magnet

1. It is made up of soft iron.
2. The magnet which loses its magnetism as soon as magnetising force is removed away from it.
3. Because of its weak power, it is not used to make the iron pieces into the magnet.

Permanent magnets

1. It is made up of steel, cobalt, and nickel.
2. The magnet, which does not lose its magnetic properties easily is called a permanent magnet.
3. It can convert an ordinary piece of iron into a temporary magnet.

All substances are made of minute particles. In a magnetic substance whether magnetized or non-magnetized), each individual particle behaves like an independent magnet. In the unmagnetized state, these particles within the substance are present in a random fashion such that they cancel out the magnetic effects of each other.
In a magnetized state, these particles align in a particle direction and the substance behaves like a magnet.

Temporary magnet

1. These magnets retain their magnetic property for a short duration of time.
2. These are made of soft iron.
3. They lose their magnetic properties once the magnetizing force is removed.

Permanent magnet

1. These magnets retain their magnetic property always.
2. These are made of iron, steel, cobalt, nickel, or an alloy callçd ANILCO.
3. They retain their magnetic properties even after the magnetizing force is removed.

A magnet is a piece of metal that can attract metals such as iron-cobalt and nickel. Naturally occurring rocks such as Lodestone or magnetite have the ability to attract magnetic substances and hence are called natural magnets.
Magnets that are made by man from magnetic substances ara called artificial magnets. These come in different shapes such as bar magnets, horseshoe magnets, disc magnets, and ring magnets. Artificial magnets can be made in any size, shape or strength as desired but natural magnets cannot be made as desired.