Question

1. if electron moving in the +x direction and a force in the -z direction ,...

1. if electron moving in the +x direction and a force in the -z direction , what is the magnetic field direction?

2. a negative charge (electron) moves in the +z direction and no magnetic force due to the magnetic field, then what is the direction of magnetic field?

what is the dirction of magnetic field, if there is magnetic force?

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