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Question : A particle of mass m & charge q is placed initially at rest is released in an electric field of magnitude E. Its kinetic energy after time t will be 

a) 2E²t²/mq

b) E²q²t²/2m

c) Eq²m/2t²

d) Eqm/2t

Doubt by Tushar

Ans : b)

Detailed Solutions : Coming Soon.