Final answer:
The right-hand rule is used to determine the direction of the magnetic force on a charged particle in the Hall effect by using the orientation of the thumb, fingers, and palm of the right-hand relative to the particle's velocity and the magnetic field.
Step-by-step explanation:
The right-hand rule is employed in the context of the Hall effect to determine the direction of the magnetic force on a moving charged particle due to the external magnetic field created by a current-carrying conductor. Specifically, the right-hand rule 1 (or RHR-1) allows you to establish the orientation of the magnetic force as it relates to the velocity of the particle and the direction of the magnetic field. Position your right thumb in the direction of the particle's velocity (v), extend your fingers in the direction of the magnetic field (B), and the direction your palm faces will indicate the direction of the magnetic force (F) on a positive charge; for a negative charge, the force would be in the opposite direction.