A charged particle moves through a region of space that has both a uniform electric field and a uniform magnetic field. In order for the particle to move through this region at a constant velocity,
选项:
A: the electric and magnetic fields must point in the same direction.;
B:the electric and magnetic fields must point in opposite directions.;
C:the electric and magnetic fields must point in perpendicular directions.;
D:The answer depends on the sign of the particle’s electric charge.
发布时间:2024-04-24 21:13:51