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A long solenoid of diameter 0.1 m has 2 x 10turns per meter. At the centre of the solenoid, acoil of 100 turns and radius 0.01 m is placed withits axis coinciding with the solenoid axis. Thecurrent in the solenoid reduces at a constant rateto OA from 4 A in 0.05 s. If the resistance of thecoil is 10π2Q. the total charge flowing through thecoil during this time is :-(1) 16 μC(3) 16 t uC4(2) 32 HC(4) 32 π μC |
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