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 charge e8s 1i/hw;axgn2*q5 yi vxu*mof neg bcx;1s +b2 ylxligible weight is released from rest between the poles of a horseshoe magnet as shown. What would be the direction of the acceleration o b xl2 +y1x;bscf 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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