阿摩線上測驗
20. An electromagnetic wave has an electric field given by E(y,t) = E0 k cos(ky -ωt). Which statement is not correct?
(A) The wave is traveling in (+y) direction；
(B) It is polarized along x-direction；
(C) B(y,t) =(E0/c) i cos(k y - ωt)；
(D) All；
(E) None.
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統計： A(0), B(0), C(2), D(0), E(0) #3188051
統計： A(0), B(0), C(2), D(0), E(0) #3188051
