本题目来源于试卷: Physics Unit20: Magnetism，类别为 通用国际物理
[单选题]
A charged particle moves across a constant ma vrq/ z(dr4qf49vuvrqx34bx ik(e47k gnetic field.zj4ug3sp n/w . The magnetic force on this particl.wgu 3nzsj/4p e
A. changes the particle's speed.
B. causes the particle to accelerate.
C. is in the direction of the particle's motion.
D. changes the particle's speed causing the particle to accelerate.
参考答案: B
本题详细解析:
暂无
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