Physics Unit21: Electromagnetic Induction & Faraday's Law (id: 2c1f3f5f6)

本题目来源于试卷: Physics Unit21: Electromagnetic Induction & Faraday's Law，类别为 国际高中通用物理

[单选题]
If a 1000-W resistor is) )ze5s2kpb3gi)0 ga t.dvc xk h 4: vik9lgc(+-ters wconnected in series with a 20-mH inductor, what is the phhc +4 k9r:g -(tvisewlase angle at 1000 Hz?

A. $2.9^{\circ}$
B. $7.2^{\circ}$
C. $45^{\circ}$
D. $90^{\circ}$


参考答案:  B


本题详细解析: 暂无

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