What happens to the direction of the force when the direction of the magnetic field is changed to vertically downwards?

When the direction of the magnetic field changes to vertically downwards, the direction of the force on a current-carrying rod also changes. According to the right-hand rule, if the current flows horizontally to the right and the magnetic field is vertically downwards, the force will act vertically upwards. Conversely, if the current flows horizontally to the left, the force will be vertically downwards. Thus, the direction of the force on the rod is determined by the cross product of the current and magnetic field vectors, adhering to the right-hand rule for electromagnetism.