本题目来源于试卷: Physics Unit20: Magnetism，类别为 国际高中通用物理
[单选题]
A charged particle moves acrosmb bb7fasf jrv3zsd74 * 1rha16mv11ss a constd+, ht;li5d ed;ze aa5ant magnetic field. The magnetic force on thide5ah+;et5ddil;z a , s particle
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
| 
