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]
A generator produces 60 A ot4lt (+hj wf5hz4 odyf r)1k3jpq,t9d f current at 120 V. The voltuh*n ;l v-wqtj.-it3mlm6 5dyage is usually stepped up to 4500 V by a transformer and transmitted through a power line of total resistance 1.0 W. v;hl.jndw3qm*-yut5t- li m6 Find the number of turns in the secondary if the primary has 200 turns.
A. 5
B. 200
C. 4500
D. 7500
参考答案: D
本题详细解析:
暂无
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