A particle of mass m and charge q is placed at rest in a uniform electric field E and then released. The kinetic energy attained by the particle after moving a distance y is ?
(a) \( qE y^2 \)
(b) \( qE 2y \)
(c) \( qEy \)
(d) \( q \cdot 2Ey \)
Answer : (c) \( qEy \)
\( V = Ed \)
\( \frac{U}{q} = Ed \)
\( U = qE y \)
\( \text{P.E} \rightarrow \text{converts to K.E} \)
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