問題詳情

55. The coil shown below has 2 turns, a cross-sectional area of 0.20 m2, and a field (parallel to the axis of the coil) with amagnitude given by B = (4.0 + 3.0t2) T, where t is in s. What is the potential difference, VA - VC, at t = 3.0 s?


(A) -7.2 V
(B) +7.2 V
(C) -4.8 V
(D) +4.8V
(E) -12 V

參考答案

答案：A
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)