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Give one application of electromagnetic induction.
Electromagnetic induction is the generation of voltage /current across a conductor whenever the conductor is placed between a changing magnetic field. This generation/production of voltage/current across the conductor is very useful and has many industrial applications. Electric generator is one of them. An electric generator work on the principle of electromagnetic induction. In which a changing magnetic field across the loop generates a voltage/current in the loop.
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?