In chapter "Electromagnetic Induction" of Physics, its first topic "Experiment of Faraday and Henry Magnitic Flux Faraday/'s Law of Induction", it's aExaple no. 7. I have not understood it at all. How this problem is solved? What formulas are used? Why they are not explained above?
Example :
A long solenoid of diameter 0.1 m has
turns per meter. At the centre of the solenoid, a 100 turn coil of radius 0.01 m is placed with its axis coinciding with the solenoid axis. The current in the solenoid is decreased at a constant rate from +2 A to 2 A in 0.05 s. Find the emf induced in the coil. Also find the total charge that flows through the coil during this time if the resistance of the coil is
.
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