1.

A ball of mass 1 g and charge \[{{10}^{-8}}C\] moves from a point A. where potential is 600 volt to the point B where potential is zero. Velocity of the ball at the point B is 20 cm/s. The velocity of the ball at the point A will be            [KCET 2001]

A.            22.8 cm/s
B.                                      228 cm/s
C.            16.8 m/s                                 
D.            168 m/s
Answer» B.                                      228 cm/s


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