Question 76 of 90

A cylindrical region of uniform magnetic field exists perpendicular to plane of paper which is increasing at a constant rate d B d t   =   α . The diameter of cylindrical region is l. A non-contucting rigid rod of length l having two charged particles is kept fixed on the diameter of cylindrical region w.r.t. inertial  frame. If two charged particles having charges q each is kept fix at the ends of the non-conducting rod. The net force on any one of the charge is 

1 .       q l α 4 2 .         q l α 2 3 .           Z e r o 4 .         q l α .

please answer it

Net force of the particle is zero

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