Electricity and Magnetism

Static electricity occurs when:

• two metals are connected to a battery

• different insulators are rubbed together

• the weather is very humid

Magnetic materials are:

• only made of iron

• made from any metal

• iron, nickel and cobalt

Examples of static electricity include:

• lightning

• the Van de Graaff generator

• both the above

The The small groups of atoms that behave like small magnets inside a large magnet are called:

• iron fillings

• domains

• poles

A flow of electrons along a wire is called:

• electromagnetism

• static electricity

• current electricity

In demagnetised steel, the domains:

• are aligned in the same direction

• are in different directions

• are not present

Substances that allow electricity to pass easily through them are:

• conductors

• resistors

• insulators

In a magnet, the domains:

• are aligned in the same direction

• are in different directions

• are not present

Substances that do not allow electricity to pass through them are:

• conductors

• resistors

• insulators

To demagnetise a magnet, one can:

• drop or hit it for a period of time

• heat it for some time

• both of the above