Generally we use the left hand rule - (if index finger shows velocity, middle finger shows magnetic field, the thumb points towards force). Recently I also came across a left hand rule for lorentz force- Using your right-hand: point your index finger in the direction of the charge's velocity, v, (recall conventional current). Point your middle finger in the direction of the magnetic field, B. Your thumb now points in the direction of the magnetic force. Generally left hand rule is used for determining the direction of induced current in a conductor placed in a magnetic field. Are both of these rules given above correct?Can we use any of them for determining the direction of lorentz force?