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In domestic electric circuit, with which wire we connect a fuse?
The following picture is the starting of a circuit diagram of a house building. In which you can see that the live wire is connected to the fuse. A live wire is actually a positive wire. And Neutral wire is the negative wire. Current flows from positive terminal to the negative terminal. Hence it is first passed to the positive wire then it goes to the house and then negative terminal. So, to prevent the devices from electrical damages, fuse is connected before them. That is to live wire.
Mr. Sharma used to park his car in the basement of his house. One day in the morning he noticed that his basement is full of knee-deep water and its walls were wet because of the hours-long rain at night. When he entered the basement, he experienced a major shock. His father seeing him from outside, rushed to the main switch and switched it off and thus saved his life.
(a) Why Mr. Sharma experienced the shock?
(b) What precautions should Mr. Sharma take to avoid such incidences in future?
(c) Which qualities were shown by Mr. Sharma’s father?