A long solenoid of diameter 0.1 m has 
turns per metre. 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 [NEET 2017]
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Given, resistance of the solenoid,
Radius of second and coil 
Charge flowing through the coil is given by
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