Answer:
Step-by-step explanation:
A charged particle is deflected by magnetic field and its direction is given by right hand rule.
If the particle is Positively charged and magnetic field is in the positive +z axis then the particle will move clockwise w.r.t that axis. for the x-axis it is downward direction. While if the electric field is in positive Y direction then it will cause the positive charge to move in upward direction i.e. +Y axis.
The two forces will cancel out each other to move the charge particle in x axis.
Similar is the case with negatively charged particle i.e. magnetic field will cause the particle to move upward and Electric field cause the particle to move downward .
So charged particle can either be Positive or negative