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]
09.27: A proton moves straight up (kw)-t n;xgmzv u lsbt3+ spk.( 3jv;q0 akh4lfbik :)the plane of this page into a region that has a magnetic field directed to the right. If the particle is undeflected as it passes through this region, in what directih ab:l04)f ikkon must there be a component of electric field? Ignore gravity.
A. To the left
B. Into the page
C. Out of the page
D. Down the page
E. To the right
参考答案: C
本题详细解析:
暂无
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