A particle of mass $'m'$ and charge $'q'$ is accelerated through a potential difference of $'V'$ volt. Its energy is
$qV$
$mq\,V$
$\left( {\frac{q}{m}} \right)\,V$
$\frac{q}{{m\,V}}$
A particle of mass $'m'$ and charge $'q'$ is accelerated through a potential difference of $'V'$ volt. Its energy is
$K E=q V$