Electromagnetic Induction and Faraday’s Law and Lenz Law (id: 5f0a64143)

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]
15.50 A magnetic field directed into the plane of th/r v3yq7gnqk2- 6 /:eji axauve pa4t vvk(re,r -ir atp:b,-nzi5ge is decreasing in time. A constant emf ξ is produced for the square loop enclosing the field in the figure. The square loop has three identical light bulbs of resistance R in it and an ideal voltmeter connected to the corners through the center of the loop. Whaei(t,-tkz v5r4: na-i b ,prrvt is the magnitude of the voltmeter’s reading?

A. 0
B. $\frac{1}{2}\xi$
C. $\frac{1}{3}\xi$
D. $\frac{1}{6}\xi$
E. $\frac{2}{3}\xi$


参考答案:  D


本题详细解析: 暂无

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