本题目来源于试卷: Physics Unit20: Magnetism，类别为 通用国际物理
[单选题]
A charged particle moves with a constant speed through a xa-o, 6e em dhhk+ 6a c-hu:*b:-dmbggregion where a2tq5qc -gn6gbfk2 ov *b ao40g i/xfi, uniform magnetic field is present. If the magnetgx*cq6obfia onqkb5t ig-/42v 0 gf2,ic field points straight upward, the magnetic force acting on this particle will be maximum when the particle moves
A. straight upward.
B. straight downward.
C. in a plane parallel to the Earth's surface.
D. upward at an angle of $45^{\circ}$ above the horizontal.
参考答案: C
本题详细解析:
暂无
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