NATURAL SCIENCE – UNIT 8 – ELECTRICITY AND MAGNETISM
4. Choose the correct option.
An electromagnet consists of an iron core/a plastic core surrounded by coil of wire.
When the coil of wire/iron is connected to a source of electricity, like a battery, a magnetic field/flow of energy is
created.
The iron becomes a conductor/magnet and attracts objects made of insulating materials/magnetic metals.
When there is no flow of electric current, electromagnets lose their magnetism/electrical energy.
This means they can be turned on and off by switching the magnet/source of electricity on or off.
6.
7.
