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]
09.18: A wire has a conventional current I directed to t yo9cc9k slp mv+e;hv89- r(ho he right. At lzo513 vugdru2u7cd1sb2 *xvthe instant shown in the figure, an elect o2c27d v d1s uzr1uvl35 bxg*uron has a velocity directed to the left. The magnetic force on the electron at this instant is
A. zero.
B. directed out of the plane of the page.
C. directed into the plane of the page.
D. directed toward the top of the page.
E. directed toward the bottom of the page.
参考答案: E
本题详细解析:
暂无
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