Motion of charged particle and Velocity selector and Mass spectrometer (id: db18

本题目来源于试卷: Motion of charged particle and Velocity selector and Mass spectrometer，类别为 美国物理杯赛(Physics Bowl)

[单选题]
02.15: A positively charged particle moves to m ,5l*kw 0jfiow 2c0wv0xc;tjthe right. kp m2vfm: tp.rr*ws-0 It enters a region of space in which tt. rm -0p smvkfp:*wr2here is an electric field directed up the plane of the paper (see figure). In which direction does a magnetic field have to point in this region so that the particle maintains a constant velocity?

A. Into the plane of the page
B. Out of the plane of the page
C. To the right
D. To the left
E. Up the plane of the page


参考答案:  B


本题详细解析: 暂无

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