The diagram illustrating the direction of the velocity, magnetic field and magnetic force is shown in the image attached
How to construct the diagram illustrating magnetic force?
The diagram illustrating the magnetic force, velocity of the charged particle, and magnetic field is determined as follows;
The direction of the velocity of the particle is to the left.
The direction of the magnetic field on the particle is upward perpendicular to the velocity
The direction of the magnetic field of the particle is downward perpendicular to the velocity.
Thus, the diagram illustrating the direction of the velocity, magnetic field and magnetic force is shown in the image attached.