Magnetism

Like poles

Unlike poles

Examples of magnetic material

• iron

• copper

• aluminium

• nickel

• steel

Examples of non-magnetic material

• iron

• copper

• aluminium

• nickel

• cobalt

What is meant by magnetic material?

• Materials that are not attracted by a magnet

• Materials that are attracted by a magnet

Magnetic properties of Iron

• soft magnetic material

• hard magnetic material

• gains or loses magnetism (easily magnetise and demagnetise)

• retains its magnetism longer (difficult to magnetise and demagnetise)

Iron is used as a core of

Magnetic properties of steel

• soft magnetic material

• hard magnetic material

• gains or loses magnetism (easily magnetise and demagnetise)

• retains its magnetism longer (difficult to magnetise and demagnetise)

Steel is good for making

What are the factors that affect the strength of an electromagnet?

• Amount of electricity supplied

• Size of coil

• Type of coil

• Number of coil

• Speed