Physics Unit21: Electromagnetic Induction & Faraday's Law (id: 5f93230da)

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]
A step-down transform6cuwj-d8n6/i6v y.ord. ye8f3jupa nq ,1fzqer is needed t7-e 4/ok8fl,k 0fchnudsi y w,o reduce a primary voltage of $120 \; V$ AC to $6.0 \; V$ AC. What turns ratio is required?

A. 10:1
B. 1:10
C. 20:1
D. 1:20


参考答案:  C


本题详细解析: 暂无

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