本题目来源于试卷: Maxwell Equations，类别为 美国物理杯赛(Physics Bowl)
[单选题]
03.42: A uniform electric field is directed o -kkfoawi* ;qbp3 wc11 j;hez8md9zc-3zp -viut of the plane of the page, contained within the circular region shown in the diagram m9; p8-zz-hdic 3evj z. The magnitude of this field increases at a constant rate. What is the direction of the induced magnetic field at the point labeled A in the diagram?
A. leftward
B. rightward
C. upward
D. downward
E. There is no induced magnetic field
参考答案: A
本题详细解析:
暂无
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