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 has 100 turns and it 8qp q0wfd4f8js secondary has m60, 22oixcx;k zj ef2jsa gb; w4yb9j200 turns. If the power input to the primary is 100 W, we can expect the power output of the secondary to be (neg2,o;92fic ;gky m2j j eaxbbzsw4xj06lecting frictional 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
| 
