Physics Unit21: Electromagnetic Induction & Faraday's Law (id: 700e459d8)

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]
An transformer consistsh2qyf.3, qdegd(ka5x1 7kx nq of a 500-tq;vfs2i( 5 tbtzq q3c6 dgw1iz)ys63eurn primary coil and a 2000-turn secondary coil. If the current in the secondary is 3.0 A, what(1cfszi ti33 g5bs)6;q qe t 6zyqdw2v is the current in the primary?

A. $0.75 \; A$
B. $1.3 \; A$
C. $12 \; A$
D. $48 \; A$


参考答案:  C


本题详细解析: 暂无

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