How to determine the direction of the magnetic component of the Lorentz force?

Using the left hand rule. 1. The palm of the left hand is positioned so that the extended four fingers coincide with the direction of the particle velocity vector. 2. After that, the palm is turned, without changing the direction of the outstretched four fingers, so that the magnetic field induction vector enters the palm. 3. The thumb is placed so that it remains in the same plane with the rest of the fingers and is perpendicular to them.

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