A long solenoid of diameter 0.1 m has 2 ...

A long solenoid of diameter 0.1 m has `2 xx 10^4` 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 0A from 4 A in 0.05 s. If the resistance of the coil is `10 pi^2Omega`, the total charge flowing through the coil during this time is

`16 muC`

`32 muC`

`16 muC`

`32 muC`

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