question_answer

  Draw a labelled diagram of domestic circuit. What is the importance of earthing in a circuit?

Answer:

                  The labelled diagram of domestic circuit is shown below  (2) To avoid risk of electrical shock, the metal body of appliances is earthed. Earthing means to connect the metal case of the appliance to earth (i.e., zero potential) by means of a metal wire called earth wire (in green insulation cover).                                                                  One end of the metal wire is buried in the earth. The appliances is connected to the earth by using the top pin of a 3-pin plug which connects to earth. Earthing saves us from electrical shocks.