學士後西醫-物理題庫下載題庫

39. The coil shown in the figure has 2 turns, a cross-sectional area of 0.20 m², and a field (parallel to the axis of the coil) with a magnitude given by B = (4.0 + 3.0t²) I, where t is in s. What is the potential difference, V_A - V_c, at t = 3.0 s
(A) +7.2V
(B) -7.2V
(C) +4.8V
(D) -4.8V
(E) -12.0V M