本题目来源于试卷: Electromagnetic Induction and Faraday’s Law and Lenz Law，类别为 美国物理杯赛(Physics Bowl)
[单选题]
11.41: For the figure shown, ti q07 lu 9d y/r:x3mis+,jorxthe variable res c 18d em*ms/kgwcpu;zt78 q-eistance of the outer circuit $R_{inner}$ is decreasing at a constant rate. While this is occurring, in which direction is the magnetic field associated with the outer circuit at the point P in the plane of the circuit and in which direction is the conventional current through the resistor $R_{outer}$ in the smaller interior circuit? The two circuits lie on a flat table.
A. Magnetic Field at P is Into the page Current through $R_{inner}$ is From X to Y
B. Magnetic Field at P is Into the page Current through $R_{inner}$ is From X to Y
C. Magnetic Field at P is Into the page Current through $R_{inner}$ is From X to Y
D. Magnetic Field at P is Out of the page Current through $R_{inner}$ is From X to Y
E. Magnetic Field at P is Out of the page Current through $R_{inner}$ is From X to Y
参考答案: A
本题详细解析:
暂无
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