A long solenoid of diameter 0.1 m has 
turns per meter. At the centre of the solenoid, a coil of 100 turns and radius 0.01 m is placed with its axis coinciding with the solenoid axis. The current in the solenoid reduces at a constant rate to 0 A from 4 A in 0.05 s. If the resistance of the coil is 
. the total charge flowing through the coil during this time is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Given, no. of turns 
radius, 
resistance, 
As we know,
'-' ve sign shows that induced emf opposes the change of flux.
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