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]
The primary of a transformer o(i7 arz30 bsb/* v (ma)vwob3fm,tpkhas 100 turns and its secondary has 20:c0ozxr2 +/yn e4e/ k0emwlip0 turns. If the power input to the primary is 100 W, we can expect the power output of the secondary to be (neglecting fri/:4eli nor zmkex 02p/+ wye0cctional losses)
A. 50 W.
B. 100 W.
C. 200 W.
D. none of the given answers
参考答案: B
本题详细解析:
暂无
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