We know from Flaming's Right Hand Rule how to calculate the direction of the magnetic force given the magnetic field and the velocity are in the same plane. Now suppose they are not in the same plane. As an example, consider a uniform magnetic field directed perpendicularly onto the screen and a charged particle moving on an inclined plane with angle X with the horizontal. What will be the direction of the magnetic force here?
I think Flaming's Right Hand Rule can only be applied when they are in the same plane because if they are not we cannot adjust our hand so that our fingers point to both of them. But I'm just a beginner in this field, so please correct me if I am wrong.