题目1单选题
把一个电感L=10mH,电阻忽略不计的电感线圈,接到<img src="https://tihai-oss-cloud.itihey.com/img/2cf61af58e44fdd6ba1a7f06fa7b0326.png">的电源上,其线圈的感抗为(),流过线圈的电流瞬时值表达式为(),电路的无功功率是()A. <img src="https://tihai-oss-cloud.itihey.com/img/490a1ae5aee2b596630bd3b5c1f421c1.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/40710e7571100f560a5193df1f8f8cbe.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/cf551a76adbff4e64482de37a37333e9.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/bf1eb24ce0a33fb328e9d4f03b92038d.png">