• 2021-04-14
    图示电路中,电压相量U=50∠30°V,阻抗Z=3+j4Ω,则电路中的电流相量I为( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/099a24488b464a34b3687dc567939469.png