A charge moving with velocity $v$ in $X-$ direction is subjected to a field of magnetic induction in the negative $X$ direction. As a result the charge will :

velocity $V$ is in $X$ direction and magnetic field $B$ is in negative $X$ direction hence angle between the velocity and magnetic field is $180^o$.

In given case force on moving charge due to magnetic field is given by,

$F=qVBsin180^o=0$

Hence charge remains unaffected.