本题目来源于试卷: Maxwell Equations，类别为 美国物理杯赛(Physics Bowl)
[单选题]
12.50: A spatially u /n/)6mxm t8hc-p( vni)9x ofhnuo1 kjni qb 4ymt.r 3wr82w5v vmform electric field is constrained within the circular region of radius R as shown. The field is directed out of the pla mrvyvr23 q.m wb 84wt5ne of the page and its strength is decreasing uniformly with time. Which one of the following choices best represents the direction of the Lorentz force on the electron at the instant shown in the figure when the electron is moving up the plane of the page? Ignore gravity
A. No Force
B. Into the plane of the page
C. Out of the plane of the page
D. To the right
E. To the left
参考答案: B
本题详细解析:
暂无
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