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1. The problem statement, all variables and given/known data

Say you a magnetic field perpendicular to the direction of a current. If you consider the current as electrons moving forward then the Lorentz force on the electrons points up (say). But if you consider the current is a lot of positive charge carriers moving backward, then the Lorentz force on the positive charges points up also because the sign of the cross-product and the sign of the charge changes. That makes ABSOLUTELY NO SENSE TO ME because how can the positive charge carriers and the electrons both move up?

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Lorentz force

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