Physics Unit22: Electromagnetic Waves (id: 04aa39fcb)

本题目来源于试卷: Physics Unit22: Electromagnetic Waves，类别为 通用国际物理

[单选题]
An electromagnetic wave is traveling tovg.b6j2uqq .1i b7nnbm v.n,y the east. At one instant at a giveo y0p6lg:ic.en point its y.g c li:06epo$E$ vector points straight up. What is the direction of its $B$ vector?

A. north
B. down
C. east
D. south


参考答案:  D


本题详细解析: 暂无

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