25 一電磁波沿著 z-軸前進，其電場三個分量： E_x = E₀sin(kz- ωt ) , and E_y = E_z = 0 .其磁場三個分量 B_x, B_y, Bz 分別為？
(A) B_x = 0; B_y = 0; B_z = (E₀/c) sin(kx-ωt)
(B) B_x = (E₀/c) sin(kz-ωt); B_y = 0; B_z= 0
(C) B_x = 0; B_y= (E₀/c) sin(kz-ωt); B_z = 0
(D) B_x = 0; B_y = (E₀/c) sin(kz-ωt); B_z= (E₀/c) sin(ky-ωt)

阿摩線上測驗 · 2026-08-18T11:15:32+08:00

25 一電磁波沿著 z-軸前進，其電場三個分量： Ex = E0sin(kz- ωt ) , and Ey = Ez = 0 .其磁場三個分量 Bx, By, Bz 分別為？ (A) Bx = 0; By = 0; Bz = (E0/c) sin(kx-ωt) (B) Bx = (E0/c) sin(kz-ωt); By = 0; Bz = 0 (C) Bx = 0; By = (E0/c) sin(kz-ωt); Bz = 0 (D) Bx = 0; By = (E0/c) sin(kz-ωt); Bz = (E0/c) sin(ky-ωt)

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