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图示正弦电流电路中电压u()的初相等于( )。
·36.9°
·- 36.9°
·- 53.1°
·53.10<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1633761511391f01718a015d24cf4a4604f4d6559a310image12.png"
·36.9°
·- 36.9°
·- 53.1°
·53.10<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1633761511391f01718a015d24cf4a4604f4d6559a310image12.png"
参考答案
