A particle of mass m and charge q is placed at rest in uniform electric field E and then released. The kinetic energy attained by the particle after moving a distance y is

Question

A particle of mass m and charge q is placed at rest in uniform electric field E and then released. The kinetic energy attained by the particle after moving a distance y is (A) qEy (B) qEy2 (C) q2Ey (D) qE2y

Tardigrade Admin · Accepted Answer

K.E acquired = work done = text force × text distance = qE × y = qEy

Q. A particle of mass $m$ and charge $q$ is placed at rest in uniform electric field $E$ and then released. The kinetic energy attained by the particle after moving a distance $y$ is

$qE y$

$qE y^{2}$

$q^{2} E y$

$q E^{2} y$

K.E acquired = work done
$= force \times distance = qE \times y = qE y$

Q. A particle of mass m and charge q is placed at rest in uniform electric field E and then released. The kinetic energy attained by the particle after moving a distance y is

qEy

qEy2

q2Ey

qE2y