Physics Unit21: Electromagnetic Induction & Faraday's Law (id: e0687aaa8)

本题目来源于试卷: Physics Unit21: Electromagnetic Induction & Faraday's Law，类别为 通用国际物理

[单选题]
In a transformer, the+ca quu,;k)dg ;ke4fu power input-1tzo+ qe a+ev

A. is larger than the power output.
B. is equal to the power output.
C. is smaller than the power output.
D. can be either larger or smaller than the power output.


参考答案:  B


本题详细解析: 暂无

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