Figure shows a conducting disc rotating about its axis in a perpendicular uniform and constnat ma...

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Figure shows a conducting disc rotating about its axis in a perpendicular uniform and constnat magnetic field B. A resistor of resistance R is connected between the centre and the rim. The radius of the disc is 5.0  cm, angular speed ω=40 rad / s, B=0.10  T and R=1 Ω. The current through the resistor is
(A) 5  mA
(B) 50  A
(C) 5  A
(D) 10  mA

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