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試卷名稱：111年 - 111 國立臺灣大學_碩士班招生考試：普通物理學#125318
年份：111年
科目：研究所、轉學考(插大)◆普通物理學
17. A background of magnetic field B(x, y) =
(a + by)x is prepared on the x-y plane for given constants a and b. A rectangular loop (see figure) moves at a constant velocity v. The bottom of the loop coincides with the x axis, and its left side is at x = 0 when t = 0. What is the induced emf on the loop at time t? (z direction points out of plane.)
(A) (a + bh)Lv clockwise.
(B) (a + bh)Lv counter-clockwise.
(C) (ah + bh2/2)Lv clockwise.
(D) (ah + bh2/2)Lv counter-clockwise.
(E) 0.
