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    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 is axis
    Question

    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 is 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 then the total charge flowing through the coil during this time is ____________.
    Fill in the blank with the correct answer from the options given below.

    A.

    16 μC

    B.

    32 μC

    C.

    16π μC

    D.

    32π μC

    Correct option is C

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