- Recognise that electricity is used in electrical appliances to produce light, sound, heating effect and magnetic effect.
- Construct and electromagnet.
- Identify cariables that affect the strength of an electromagnet.
Light---lamp
sound---speaker
heating---iron
magnetic-- electromagnet
the longer the wire, the stronger the magnet
the bigger the batteries, the stronger the magnet
sound---speaker
heating---iron
magnetic-- electromagnet
the longer the wire, the stronger the magnet
the bigger the batteries, the stronger the magnet