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 charg ;,e f3vtk(9yg li fu7se of negl vmnq/ ;h)-ur zigible weight is released from rest between the poles of a horseshoe magnet r)/hv- mz;u nq 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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