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Physics
Physics
Problem
A charged particle of charge
q
q
q
and mass
m
m
m
is released from rest in a uniform electric field
E
E
E
. Neglecting the effect of gravity, the kinetic energy of the charged particle after time
t
t
t
seconds is (a)
E
q
m
t
\frac{Eqm}{t}
t
E
q
m
(b)
E
2
q
2
t
2
2
m
\frac{E^2 q^2 t^2}{2m}
2
m
E
2
q
2
t
2
(c)
2
E
2
t
2
m
q
\frac{2E^2 t^2}{mq}
m
q
2
E
2
t
2
(d)
E
q
2
m
2
t
2
\frac{Eq^2 m}{2t^2}
2
t
2
E
q
2
m
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