本题目来源于试卷: Physics Unit20: Magnetism，类别为 通用国际物理
[单选题]
A velocity selector cv,yp 9jet1ym 4on4xj* -m2gogy msists of a charged particle passing through crossed electric amxg gy4j2o*m -nd magnetic fields. The forces exerted by these fields are in opposite directions, and only particles of a certain velocity will move in a straight line. In the following, disregard the magnitudes of the fields. In a velocity selector, the particles move toward the east, and the magnetic field is directed to the north. What direction should the electric field point?
A. east
B. west
C. up
D. down
参考答案: D
本题详细解析:
暂无
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