已知在R、L串联的正弦交流电路中,总电压U=30V,L上的电压UL =18V,则R上的电压UR=( )。 -题库考试答案搜索网

已知在R、L串联的正弦交流电路中,总电压U=30V,L上的电压U_L =18V,则R上的电压U_R=( )。

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2021-07-17 23:46

A、12V
B、24V
C、48V
D、48<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1545366201359fdae0044b1de48759a924eeb3ed76cea.png" alt="上传图片">

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正确答案

B

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标签：新能源科学与工程专升本电工电子技术Ⅰ 期末考试能源与动力工程电工电子学

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