The right hand rule allows to find the result for the direction of the magnetic force is:
The magnetic force is given by the cross product of the velocity of the particle by the magnetic field, by the cross product the three vectors are perpendicular.
F= q v x B
Where bold indicates vectors, F is force, q is charge, v is velocity, and B is magnetic field.
The direction of the force can be obtained from the right hand rule, for a positive particle:
In the attachment we see a diagram of these vectors, using the right-hand rule:
The thumb is in the direction of the particle speed.
The extended fingers are entered into the page that is the difference of magnetic field.
The palm of the hand, which is the direction of the force, is in the plane of the page and because it is negatively charged, it points to the right.
In conclusion using the right hand rule we can find the result for the direction of the magnetic force is:
Learn more about magnetic force here: brainly.com/question/14379008