Simple Electric Circuit Magnetism and the Electromagnet Mechanical Systems (revision) Developed by: Johnny Freese WCED: METRO SOUTH CAPS Technology Grade 7 Term 3

TYPES OF MAGNETS HORSE SHOE BAR MAGNET MANY TYPES

MAGNETISED & UNMAGNETISED UNCOMBED HAIR COMBED HAIR UNMAGNETISED MAGNETISED

Some metals are attracted to magnets and some are not. iron aluminium nickel steel wood copper plastic

A simple electrical circuit 3 volt batteryswitch Light bulb Conducting wire 1,5 V

Simple circuit diagram 1,5 volt cell Conducting wire switch Light bulb

Summary Component NameComponent PictureSymbol Cell Switch Light Bulb Conducting wires 1,5 V

Simple electromagnet N S Iron nail Cell Switch Insulated copper wire

Magnetic force! More windings mean a stronger magnet 3 layers of windings

Explain how this electromagnet machine works. Many technologies use electromagnets.