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]
04.14: A positive electric ch rsg :p m688)vlttxa (/ivsq4xarge of negligible weight is released from rest bet i )qax stxvt/vpr48(g8s:6lmnvm,c dxkonjez0h.nr0lnp.3 fu . 5-5ween the poles of a n,0c.o53kn5p nl-re .ndmhfz 0.j xuv horseshoe magnet as shown. What would be the direction of the acceleration of the charge caused by the magnetic field?
A. towards the north pole
B. towards the south pole
C. upwards
D. downwards
E. none of the above
参考答案: E
本题详细解析:
暂无
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