In the given set up the parallel plate capacitor AB has vertical plates with plate separation 50 mm and capacitance C From the

Question

In the given set up the parallel plate capacitor AB has vertical plates with plate separation 50 mm and capacitance C From the plate A a small conducting ball of mass m capacitance C hangs from a non conducting silk thread of length 100 mm The ball initially touches the plate A which is connected to a power supply of voltage V for a short time by closing the switch 5 and then opening it again The plate B is grounded The motion of conducting ball is now observed It is observed that due to the charge deposited on plates and ball the ball swings across touches the plate B returns touches A and finally swings out again such that it almost touches plate B Taking g 10 ms and based on the above facts answer the following questions B 7 The angle made by ball and string with the plate A when the ball is in its final position is A 30 C 60 8 The ball initially touches plate B it loses its charge to B swings back and touches A and then finally again swings out and almost touches plate B The new common potential V is given by B A 4 CV C C B 45 D 0 C V my Covo C C

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