問題詳情

27. The magnetic field associated with a uniform plane wave propagating in the +z-direction in free space is given by 

 = H0 cos(6πx107t -0.2πz)y (A/m) . Find the instantaneous power fow across a surface of area Im2 in the z=0 plane at t=(1/8)μs
(A)0 W
(B)1 W
(C)1.5 W
(D)3 W

參考答案

答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增