問題詳情
22 一半徑為 R 的金屬圓盤以 ω 的角速度繞通過其中心的轉軸旋轉，今在中心軸方向上加一均勻磁場 B，求圓盤邊緣與圓盤中心間的感應電動勢 ε 為若干？
(A)ε≒ BR2ω/2
(B)ε≒ πBR2ω
(C)ε≒ πBR2ω/2
(D)ε≒ 2πBR2ω屏幕入射方向 亮度
(A)ε≒ BR2ω/2
(B)ε≒ πBR2ω
(C)ε≒ πBR2ω/2
(D)ε≒ 2πBR2ω屏幕入射方向 亮度
參考答案
答案：C
難度：適中0.551282
統計：A(3),B(22),C(43),D(10),E(0)
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