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SAI INTERNATIONAL SCHOOL
                                                         Class-6

                                                      Lesson Note
                                                   Subject-Physics
                                            Ch- Electricity and Circuits

                                      Subtopic- Conductors and Insulators

               Substances can be classified into two categories: conductors and insulators.

               Conductors:
               A substance that allows electric current  to pass through it is called a conductor or good
               conductor of electricity.

               E.g. Metal such as copper, iron and aluminum are good conductor.
               That is why the filament of a bulb is also made of metal.

               Insulator:
               A substance that does not allow electric current to pass through it, is called a bad
               conductor or insulator.

               E.g. Non-metals such as nylon, glass and cotton are bad conductor.

               Note:

                     Conductors and insulators has it's own advantages.

                     The wires used for carrying electricity are made of conducting materials. This
                       allows electricity to be transported from one place to another.

                     Plastic is an insulator which prevents us from getting electric shock.

                     The bodies of electrical switches, sockets, plugs and handles of an electric iron
                       are all made of insulating materials.
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