10.A positively charged particle of specific charge , accelerated by a potential difference V moves through a uniform transverse magnetic field B. The field occupies a region of width 1. The angle through which the charged particle deviates from initial direction of its motion is B (1) sin Bl 11B2 (3) cos [2Bl 3V (2) sin 2Bl 1 [2Bl] (4) sin [Bl a 2V 11.A simple LR circuit is connected to a battery at t = 0. The time instant at which rate of energy storage in inductor is half of power delivered by battery 2L (1) 214 In 2 (3) In 2 (2) In (2) (4) In 3 R 12.A rod of length I slides against the perpendicular wall, such that the lowest point (A) of the rod slides with a speed v on horizontal surface as shown in figure. There exist a uniform magnetic field throughout the region. Now, what is the distance of point 'P' on the rod from end 'A' such that, the induced emf across 'P' and 'A' is maximum? X X X X X X X X X x x x x x x x x x x x x x x x x x x x x x x xxxx xx xx xx 1 x x x x x x x 30 x x x x x x x X X X xxxxxxxx X X X xxxxxxxxxxx (1) 3/13 (3) 31/1 shiksing 13.A solid circular disc (m, R) translates with Vo and rotates with wo = 2V R at t = 0. Because of friction, pure rolling starts at t = to. The coefficient of friction is u. Find to- O @0 V 2V R 3 V V R Vo (1): (3) 3g 2V 3g (2): (4) 4V 3-9 Vo -g