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The magnetic force on a moving proton acts towards north in a horizontal plane. If the proton is moving vertically upward then what will be the direction of magnetic field?
The direction of moving proton is the direction of current. Hence according to question,
•The current is in the upward direction with respect to the horizontal plane
•Magnetic force is acting in the direction of north on the horizontal plane.
•Hence, from Flemings left-hand rule we can determine that the magnetic field is in the direction of East on the horizontal plane.
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?